User’s Manual
for CSI’s PLS 500 Series Equipment
Conference Systems, Inc.
© Copyright 2005 Conference Systems, Inc.
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
2
Introduction
Key Features
• 2 channel transmitter allowing bi-directional interpretation
• Familiar A and B buttons for language selection on interpreter transmitter
• Visual display of channel selected
• Visual display of battery life indicator
• Choice of preferred interpreter microphones
• Five preprogrammed channels easily selectable as spare frequencies
• 19 frequencies available for custom programming
• FCC approved 216MHz frequencies for simultaneous interpretation
• Operates on disposable or rechargeable AA batteries
PR-500 programmable receiver for delegates
• 5 selectable preset receiver channels for spare frequencies in case of interference or
multi-lingual operation
• Channel muting on unused channels allows bi-directional operation
• Scrolling channel up/down buttons for easy operation
• Seek function aids location of live channel
• Visual display of channel selected
• Visually displayed field strength meter
• Visually displayed battery life indicator
• Choice of preferred delegate earphones
• Operates on disposable or rechargeable AA batteries
• 19 frequencies available for custom programming
• FCC approved 216MHz frequencies for simultaneous interpretation
Conference Systems, Inc., the largest national distributor of
simultaneous interpretation systems, is proud to present the
PLS500 series. PLS500 is the world’s first portable, wireless language
system that has been specifically designed for simultaneous
interpretation applications. In the past, products designed for similar
audio applications have been adapted into the language
interpretation market and users have had to work around their
limitations. The PLS 500 series has been designed by interpretation
industry people for use by professional interpreters.
With over 25 years of experience in the language interpretation
industry, CSI has developed a keen understanding of what is required to provide effective
communication in multiple languages.
Although the PLS500 Portable Language System utilizes cutting-edge wireless technology for the
highest quality audio transmission, it has been specifically designed for ease of use to be operated by
non-technical personnel. The “user-friendly” design will allow interpreters to concentrate on their
performance and not worry about operation of the equipment.
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
3
Table of Contents
Miscellaneous
Technical Service Contacts .....................4
Compliance Notices ...........................4
Limited Lifetime Warranty .......................5
PT-500 Portable
Transmitter
Preparing the PT-500 for Use ....................6
Operating the Transmitter .......................7
LCD Display Descriptions .......................8
PT-500 Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Battery Status Icon ..............................8
Transmitter LED Indicator. . . . . . . . . . . . . . . . . . . . . . . . 8
Charging Batteries .............................9
Wall Transformer Operation ....................10
Special Applications
BRINGING SOUND TO THE INTERPRETERS .......10
PT-500 Specifications ..........................11
PT-500 Troubleshooting ........................12
PR-500 Programmable
Display Receiver
Preparing the PR-500 for Use ...................14
Operating the Receiver .......................15
Locking on a Channel .........................15
Receiver LED Indicator ........................16
LCD Display Descriptions ......................16
Battery Status Icon .............................16
PR-500 Programming ..........................16
Squelch & Squelch Programming ..............17
Charging Batteries ............................18
Wall Transformer Operation ....................19
PR-500 Specifications ..........................20
PR-500 Troubleshooting ........................21
Appendix A ...............................22
LT-800 Stationary Transmitter. . . . . . . . . . . . . . . . . . . . 22
LT-800 Channel Selection ......................22
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
4
Technical Service Contacts
If technical service is needed, please
contact CSI. Pre-authorization is required before
returning CSI products.
If products were damaged in shipment, please
contact the carrier, then contact CSI for
replacement or repair requirements
payable by the carrier.
Toll Free: 1.800.614.7574
Telephone:
1.301.330.9090
Fax: 1.301.330.6901
Internet: www.conferencesystems.com
Service E-Mail: [email protected]
Mailing and Shipping Address:
Conference Systems, Inc.
12910 Cloverleaf Center Drive
Suite 100
Germantown, MD 20874
Technical Service Contacts & Compliance Notices
FCC ID Numbers
LT-800-216 (216 MHz base transmitter) ID: OMD800-003
PT-500-216 (216 MHz portable transmitter) ID: OMD700-003
Models LT-800, PT-500 and PR-500
These devices comply with part 15 of the FCC Rules. Operation
is subject to the following two conditions: (1) These devices
may not cause harmful interference, and (2) these devices
must accept any interference received, including interference
that may cause undesirable operation.
LT-800 and PT-500 Transmitters
LT-800 and PT-500 transmitters are authorized by rule under
the Low Power Radio Service (47 C.F.R. Part 95) and must not
cause harmful interference to TV reception or United States
Navy SPASUR installations. You do not need an FCC license
to operate these transmitters. These transmitters may only be
used to provide: auditory assistance to persons with disabilities,
persons who require language translation, or persons in
educations settings; health care services to the ill; law
enforcement tracking services under agreement with a law
enforcement agency; or automated maritime
telecommunications systems (AMTS) network control
communications. Two-way communications and all other
types of uses not mentioned above are expressly prohibited.
Caution: Changes or modifications not expressly approved
by the party responsible for compliance could void the user’s
authority to operate CSI’s equipment.
FCC Statement
This equipment has been tested and found to comply with the
limits for a class B digital device, pursuant to part 15 of the FCC
Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate
radio frequency energy and if not installed and used in
accordance with the instructions, may cause harmful
interference to radio communications. However, there is no
guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following
measures:
• Re-orient or relocate the receiving antenna.
• Increase the separation between the equipment and
receiver.
• Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV
technician for help.
This equipment has been certified to comply with the limits for
a class B computing device, pursuant to FCC and IC Rules. In
order to maintain compliance with FCC and IC regulations,
shielded cables must be used with this equipment. Operation
with non-approved equipment or unshielded cables is likely
to result in interference to radio and TV reception. The user
is cautioned that changes and modifications made to the
equipment without the approval of manufacturer could void
the user’s authority to operate this equipment.
Compliance Notices
CSI Limited Warrant
y
Warranty Terms
February 1, 2010
Conference Systems warrants its products to be free from defects in workmanship and
material under normal use and conditions for a one-year limited manufacturer's
warranty.
Accessories are warranted for 90 days from date of purchase. This warranty is only
available to the original end purchaser of the product and cannot be transferred.
Warranty is only valid if warranty card has been returned within 90 days of purchase.
Warranty does not cover normal wear and tear on the product or any other physical
damage unless the damage was the result of a manufacturing defect.
The warranty is void if damage occurred because of misuse or if the product has
been repaired or modified by anyone other than a factory authorized service center.
Conference Systems is not liable for consequential damages due to any failure of
equipment to perform as intended. Conference Systems shall bear no responsibility or
obligation with respect to the manner of use of any equipment sold by it. Conference
Systems specifically disclaims and negates any warranty of merchantability or fitness
of use of such equipment including, without limitation, any warranty that the use of
such equipment for any purpose will comply with applicable laws and regulations. The
terms of the warranty are governed by the laws of the state of Maryland, USA.
Conference Systems will only accept returned products with prepaid shipping and
with a return merchandise authorization number (RMA). To receive an RMA number,
visit http://www.conferencesystems.com/repairs/new. You may also call 1-301-330-
9090 or e-mail
Warranty terms, prices and specifications of products are subject to change without
notice.
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
6
PT-500 Portable Transmitter, Preparation
Remove the product from the shipping
container and plastic cover. Inspect for
physical damage. See “Technical Service
Contacts” (Page 4) if damage has occurred.
Open the front
access door
by gripping the
two tabs with
your thumb and
index finger.
Select Battery Type Place the battery select
switch in the appropriate position. You have two
choices: Alkaline or NiMH. The battery select
switch is located in the
battery compartment and
the batteries must be
removed to access
this switch. The unit
is shipped with the
switch in the Alkaline
position.
CAUTION: If you are using
any battery type other than rechargeable NiMH
batteries, make sure the battery select switch is
in the alkaline position NICAD batteries should
NOT be used in this product.
Set SQ switch
The SQ switch is
inside the battery compartment
next to the Battery Select
switch. The unit is shipped
with SQ in the ON position.
To turn it off, use a small
screwdriver or pen to slide
the switch to the OFF
position (to the right). See page 21 for more
information on SQ.
Set Mic Sensitivity Switch
The microphone
sensitivity switch is
located inside the
battery compartment,
to the left of the BATTERY
selection switch. The PT-500 is
shipped with this switch in the
center (MED) position. If you
are using a microphone from
another vendor, you may need to experiment
with different settings.
Place Batteries in Unit Place two AA batteries in
the compartment, making note of the battery
polarity shown in the battery compartment, and
again verifying that the BATTERY SELECT switch is
switched correctly for your batteries (see Step 4).
Preparing the PT-500 for Use
WARNING: Do not place the BATTERY switch in the NiMH
position if you are not using Nickel Metal Hydride Batteries.
The NiMH position will attempt to charge any batteries in
the unit, even if they are not the proper type.
Charging non-Nickel Metal Hydride (NiMH) batteries will
result in physical harm, destruction of property and/or fire.
Top of Unit and
Battery Compartment
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
7
PT-500 Portable Transmitter, Preparation (cont.), Operation
Connect the microphone
to the microphone jack
on the top of the unit. The
unit uses the microphone
cable as an antenna.
If you wish to input line level audio, an optional
CSI supplied cable is available for this purpose.
You can also connect as follows:
Turn the unit on.
If it does not turn on by
pressing power button, check to ensure you
have installed charged batteries and that the
batteries have been installed with the proper
polarity.
Close the access door.
If you choose, lock the
door by rotating the locks on the right side
1/4
turn clockwise, and on the left
side
1/4
turn counter clockwise.
This can be done with a small
screwdriver.
Operating the PT-500 Transmitter
Make sure the unit is on by pressing the power
button on the front of the unit and watching
the display illuminate.
Select the channel to transmit on by pressing
the button marked A or B located on the front
panel of the unit. These buttons will come
preset to channels 1 and 5. If you are getting
interference on either channel, please refer to
the section marked “PT-500 Programming.”
Make sure the mute is off. The Mute switch
located on the top of the unit should be set
in the “talk” position. The red indicator light
on top of the unit should be constant and not
blinking (blinking indicates Mute is activated).
Check the battery life by looking at the battery
indicator on the right side of the LCD display.
For best results, the indicator should show a full
charge.
Test the PT-500 by speaking into the connected
microphone and listening on a PR-500 unit set
to the corresponding channel.
Tip
Ring
Sleeve
Line Input
Ground
Microphone
Turn POWER on by
pressing button, turn off
by pressing again
LCD display shows battery
level and channel
LED lights up red when ON
On both the right and left
side, lock door by turning
slot vertical as shown
Preparing the PT-500 for Use (continued)
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
8
PT-500 Portable Transmitter, Programming, Battery Status, LCD Display
Battery Status Icon
The status of the battery is
indicated by the battery
symbol on the LCD.
This segment will blink when batteries are low.
When the batteries are almost fully discharged,
the battery segments and the red LED near the
volume control will blink quickly. When this
occurs, less than 5% of the battery life is
remaining and the batteries should be
immediately replaced or recharged.
As fewer battery segments are displayed, the
lower the battery level, as shown.
When the battery is fully charged, all three
segments of the battery symbol will be
displayed, as shown.
When dots are illuminated, the microphone
is active. If this display does not appear, the
microphone is muted.
PT-500 Transmitter LCD Display Description
Indicates the currently
tuned channel
Indicates the unit is in PROGRAM
mode (see above)
Used for advanced
channel programming
(see above)
Battery level indicator.
The indicator flashes, along with
the red LED on top of the unit,
to alert you when the battery is
low and needs to be charged
or changed. (see information
above)
Transmitter LED Indicator
Slow Flashing when
Charging = Unit is
charging
Slow Flashing =
Battery is low
Steady Red LED =
Proper operation
PT-500 Transmitter Programming
If you wish to change the reception channels of the A
or B button from 1 and 5 to 2, 3 or 4, see the following
procedure.
1. If you wish to change the A button preset, press
the A button and hold it until the PGM indicator
shows up in the lower left corner of the LCD
display.
2. Once the PGM indicator is displayed, press the A
again and step through the available preset
channels 1, 2, 3, 4 or 5.
3. When you see the number of the channel you
wish to select displayed, release the A button for 4
seconds. The system will automatically remember
the new preset channel number.
4. Repeat the above procedure for setting the
channel on the B button.
5. For more advanced channel setting (channels
6-19) please contact the CSI Technical Service
Department (Page 4).
Quick Flashing = Mute
is activated
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
9
PT-500 Portable Transmitter, Charging
Charging Batteries
1. The PT-500 is unique because it has an
automatic battery charger built-in. That
means that when the unit is connected to
a wall transformer or placed in a battery
recharging case, NiMH batteries will be
charged within the PT-500. Once batteries
are charged the internal battery charger will
automatically turn off. This prevents
overcharging of batteries, automates the
process of charging, and makes it so you
don’t have to remember to unplug the
charger.
2. Do not attempt to charge alkaline or any
other type of non-NiMH batteries. Only charge
Nickel Metal Hydride (NiMH) batteries within
the PT-500. We recommend that you use NiMH
batteries supplied by CSI.
3. IMPORTANT: To charge NiMH batteries, the
BATTERY SELECT switch must be
selected to NiMH. Use a
pen or small screwdriver
to move the switch
(located in the battery
compartment directly
below the BATTERY SELECT
label) to the proper
position.
4. Install NiMH rechargeable batteries in the
battery conpartment, ensuring that proper
polarity has been observed.
NOTE: It is recommended that you only use a CSI
supplied charging transformer. Or, set the
PT-500 with NiMH batteries within the unit in a
CSI Carrying / Charging Case.
Charging Using a Drop-In Charger
To charge the batteries using a drop-in charger,
place the unit into a slot in the charger and
connect the charger to power. Make sure the
unit is fully seated in its slot. Units can be on or off
while charging.
SmartCharge™ uses a pulse charging, which
greatly extends the life of Nickel Metal Hydride
(NiMH) batteries. The entire charging process
takes about 13 hours. CSI recommends that you
allow the charger to complete its full cycle every
time for maximum battery life.
During the charge cycle, the red LED on top of
the CSI product will flash slowly. When charging is
completed, the LED will turn off It is not necessary
to unplug the charger; however, if you unplug the
unit from the charger and then plug it back in, it
will begin the 13-hour charge cycle over again.
When not using the PT-500, it is recommended to
leave the unit on the charger. The charger
provides a “maintenance” charge that keeps
the battery at 100%. If the unit is not on the
charger, the battery will lose up to 20% of its
charge per month.
NOTE: Contact CSI (see page 4) for charging and
carrying case options.
WARNING: Do not place the BATTERY switch in the
NiMH position if you are not using Nickel Metal Hydride
Batteries. The NiMH position will attempt to charge any
batteries in the unit, even if they are not the proper type.
Charging non-Nickel Metal Hydride (NiMH) batteries will
result in physical harm, destruction of property and/or fire.
Top of Unit and
Battery Compartment
16-unit Drop In Charging Case shown
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
10
PT-500 Portable Transmitter, Wall Transformer Operation, Special Applications
Charging Using a Transformer
With NiMH batteries in the unit, plug wall
transformer in CHARGING connection and into wall
outlet (as shown). LED and battery symbol will flash
slowly while charging.
1. The unit will start charging as indicated by the
flashing of the red LED and the battery symbol
on the LCD.
2.
Once the batteries are fully charged, the unit
will stop charging the batteries. Full-charge will
be indicated when all battery segments on the
LCD are illuminated and the LED near the
volume control is off.
3. The unit can be operated while batteries are
charging.
Operating the PT-500 with a Wall Transformer
1. The unit will operate normally when connected
to a wall transformer.
2. Batteries do not need to be installed in the unit
to operate using a wall transformer.
Special Applications - BRINGING SOUND TO
THE INTERPRETERS
Please inquire about our new PT/PR-400 Sound
Feed System designed to bring the sound from the
source (speaker) directly to the interpreter’s ear.
Whether the source is a single speaker, a table of
speakers or patching into an existing sound system,
the PT/PR-400 Sound Feed System has the solution.
The PT-500 has no power
Make sure the unit has fully charged batteries, or
has a wall transformer connected to it. Press the
ON button. If this does not work, try a different set
of batteries. Make sure the batteries are installed
correctly.
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
11
PT-500 Portable Transmitter Specifications
PT-500 Portable Transmitter Specifications
Specification PT-500
RF
RF Frequency Range 216.025 - 216.987 MHz
Number of Channels
5 channels available as default. 19 total wideband available channels.
Please contact CSI for more information.
Sensitivity .6uV typical, 1 uV maximum for 12dB SINAD
Frequency Accuracy ±.005% stability 0° to 50°C (32° to 122° F)
Transmitter Stability 50 PPM
Transmission Range From 0 ft to 50 ft (15.2m) to 150 ft (45.7m) up to 150 linear feet (30.48m).
Output Power Less than 100mW
Antenna Uses microphone cable
Antenna Connector 3.5mm connector
Compliance FCC Part 15, Industry Canada
Audio
** All system specifications are wireless end-to-end
System Frequency Response 63Hz - 10kHz (±3dB)
System Signal to Noise Ratio
(A-weighted)
SQ enabled: 80dB; SQ disabled 50dB
System Distortion <2% total harmonic distortion (THD) at 80% deviation
Microphone Input
Unbalanced, tip of 3.5mm connector, (-55 dBu nominal,
-32dBu maximum, impedance 21 Ohms)
Microphone Sensitivity Three position switch: high, middle and low; 6dB increments
Line Input
Unbalanced, ring of 3.5mm connector, (-10dB nominal input level adjustable,
+4dBu maximum, impedance 10k Ohms)
Phantom Power 3VDC
Controls
Set-up Controls,
behind the door
Mic sensitivity, NiMH/alkaline battery, SQ enable/disable
User Controls Power, mute, channel A or B
Programming
Channels A and B can be programmed to any of19 channels. There are 5 channels
available by default. Please contact CSI for advanced channel programming.
Indicators
LED
Red, illuminates when unit is on. Flashes when batteries are low,
or to indicate charging. Flashes 2x when muted
LCD Display Indicates channel, battery power level and programming
Power
Battery Type Two AA batteries, alkaline or NiMH
Battery Life (CSI batteries) 15 hours alkaline, 8 hours NiMH rechargeable
Battery Charging (NiMH only) Fully automatic, 13 hours
Power Supply Connector
2.3mm OD by 0.7mm ID, barrel type connector. 7.5VDC, center positive 300mA.
Drop in contact points for use with charging cases.
Compliance UL Listed
Physical
Dimensions 3.0 in x 1.0 in x 5 in WxDxH (7.6cm x 2.5cm x 13.cm)
Unit Weight 3.9oz (111g)
Unit Weight with batteries 5.8 oz (164.4g)
Shipping Weight 1.0 lbs (0.45kg)
Door
Manually lockable. A, B and power through door,
other controls behind door (see Controls above)
Environmental
Temperature - Operation -10° to 40°C (14° to 104° F)
Temperature - Storage -20° to 50°C (-4° to 122° F)
Humidity 0 to 95% relative humidity, non-condensing
Specifications subject to change without notice.
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
12
PT-500 Troubleshooting
There is no audio
Make sure the MUTE/TALK switch is in the TALK
position. Make sure you have the microphone
plugged all the way in to the input jack. When
using the line input adapter make sure you
have connected a line level, unbalanced
input at the “ring” of the connector.
The audio is distorted
Make sure you are using an approved
microphone. Try using a different mic
sensitivity switch setting (the switch is located
inside the battery compartment of the unit).
If you are using a line level input, turn down
the level of the input. If you are using any
equipment that does not have SQ capability,
turn off SQ in the PT-500 and any receivers
utilized on this system.
There is hum in the audio
The microphone may be too close to a
transformer. Try moving around and see if the
hum goes away.
The microphone level is low
The microphone must be in close proximity
to the person who is speaking. If this does not
work, try using a head-worn microphone. The
mic sensitivity switch may be on the wrong
setting, see page 6. Try a different setting (the
switch is located inside the battery
compartment). Some microphones have
directional pickups, ensure that the
microphone in use is oriented and positioned
properly (pointing at the speakers mouth).
The audio doesn’t have much fidelity
If your receivers all have SQ capability,
activate SQ in all units by moving their
switches to the ON position. In the PT-500 and
all SQ-equipped receivers, the SQ switch is
located inside the battery compartment.
See page 6 for more information.
There is too much noise
This is most likely because the microphone is
not close enough to the talker’s mouth, and it
is picking up background noise.
Try positioning the microphone closer or try
using a microphone that is directional (such
as a head-worn mic). Try another setting on
the mic sensitivity switch (located inside the
battery compartment). Ensure the microphone
is not brushing up against anything.
There is interference
Try different frequencies until you find a clear
channel.
I cannot pick up the signal on the receiver
Make sure the transmitter and the receiver are
on the same channel.
I can pick up the signal on the receiver, but it
sounds like it’s not tuned in
Check to make sure the transmitter and
receiver are on exactly the same channel
number / letter.
The audio will not mute
If you are using the line input through the ring
of the input jack, this audio will not be muted
when the mute switch is engaged. Only the
mic input (tip of the input jack) will be muted.
PT-500 Troubleshooting
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
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13
PT-500 Troubleshooting, continued
There is not sufficient range
The PT-500 is a portable transmitter that uses
the microphone cable as an antenna and
the range will vary depending on the location
of the receivers compared to the transmitter.
You can expect about 100 feet of average
effective working range.
My batteries are not charging
Make sure you are using NiMH batteries and
that the BATTERY SELECT switch (inside the
battery compartment) is set to the NiMH
position. Make sure the batteries are installed
correctly. Make sure you are using the right
kind of wall transformer or charging case.
Make sure the charging case is connected to
power and the unit is securely pushed into its
slot in the case.
NOTE: CSI uses 2100mAh (milli-Amp-hour)
constant current NiMH (Nickel Metal Hydride)
batteries.
PT-500 Troubleshooting (continued)
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
14
Open the front access door by gripping the two
tabs with your thumb and index finger.
Select Battery Type
Place the battery select
switch in the appropriate position. You have
two choices: Alkaline or
NiMH. The battery select
switch is located in the
battery compartment
and the batteries must
be removed to access
this switch. The unit is
shipped with the switch
in the Alkaline position.
CAUTION: If you are using any battery type
other than rechargeable
NiMH batteries, make
sure the battery select
switch is in the alkaline
position NICAD batteries
should NOT be used in this
product.
Set SQ switch
The SQ switch
is inside the battery
compartment next to the
Battery Select switch. The unit
is shipped with SQ in the
ON position. To turn it off,
use a small screwdriver
or pen to slide the switch
to the OFF position (to the
right). See page 20 for more
information on SQ.
Place Batteries in Unit
Place two AA batteries
in the compartment, making note of the battery
polarity shown in the battery compartment, and
again verifying that the BATTERY SELECT switch is
switched correctly for your batteries (see Step 4).
Place an earpiece or headset
in the mini jack on the top of
the unit. The PR-500 is designed
to work with either mono or
stereo connectors.
NOTE: The PR-500 receiver
accepts mono stereo jacks.
Turn the receiver on
by rotating the volume
knob counter-clockwise. The red LED should
activate and the LCD display will illuminate. If
they do not, check to ensure you have installed
charged batteries and that the batteries have
been installed with the proper polarity.
Close the access door.
If you choose, lock the
door by rotating the locks on the right side
1/4
turn clockwise, and on the left
side
1/4
turn counter clockwise.
This can be done with a small
screwdriver.
Preparing the PR-500 Receiver for Use
WARNING: Do not place the BATTERY switch in the NiMH
position if you are not using Nickel Metal Hydride Batteries.
The NiMH position will attempt to charge any batteries in
the unit, even if they are not the proper type. Charging
non-Nickel Metal Hydride (NiMH) batteries will result in
physical harm, destruction of property and/or fire.
Top of Unit and
Battery Compartment
LED lights
up solid red
when unit
is on
LCD display
illuminates
when unit
is on
Turn volume knob
counter-clockwise
to turn unit on
PR-500 Portable Receiver, Preparation
On both the right and left
side, lock door by turning
slot vertical as shown
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
15
Make sure the unit is on by rotating the volume
knob to ON when an earpiece or headset is
plugged into the unit. PR-500 receivers use the
cable of the earphone or headset as receiving
antenna.
CAUTION:
Don’t blow out your
ears! Slightly rotate the volume
knob to turn the unit ON while
keeping the volume turned
down. Then, adjust volume after
listening to earphone.
Select a channel to receive the incoming
audio by pressing the channel UP and DOWN
buttons. Note that the transmitters are preset to
channels 1 and 5 so begin by selecting on of
these two channels.
Test the Audio: With on person operating the
PT-500 transmitter and one person operating
the PR-500 receiver on the same channel, you
should now be able to test the audio.
Find Audio Transmission:
Another way to select
a channel is to press the SEEK
button. When you do this, the
PR-500 receiver looks for the
next channel that is active.
Sometimes that unit will mistake
interference for a real
broadcast signal. If you get
interference, press the SEEK
button again. Continue to press
SEEK until you reach the
clearest operating channel.
Adjust volume control for the best listening level.
Locking On Channels
For applications where users want to select and
lock on to one specific channel follow the
directions below.
Find a channel you want to lock onto by
pressing the seek button.
Hold down the seek button for 5 seconds.
The channel is now locked.
To Unlock Channels
Repeat the locking procedure.
PR-500 Receiver, Preparation (cont.), Operation, Locking Channels
Operating the PR-500 Receiver
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
16
PR-500 Portable Receiver, Indicators, Battery Status, LCD, Programming
Receiver LED Indicator
Slow Flashing when
Charging
= Unit is
charging
Slow Flashing =
Battery is low
Steady Red LED =
Proper operation
Battery Status Icon
The status of the
battery is indicated by
the battery symbol on
the LCD.
This segment will blink when batteries are low.
When the batteries are almost fully discharged,
the battery segments and the red LED near the
volume control will blink quickly. When this
occurs, less than 5% of the battery life is
remaining and the batteries should be
immediately replaced or recharged.
As fewer battery segments are displayed, the
lower the battery level, as shown.
When the battery is fully charged, all three
segments of the battery symbol will be
displayed, as shown.
Small dots indicate the
relative RF signal strength.
PR-500 Receiver LCD Display Description
Indicates the currently
tuned channel
Indicates the unit is in PROGRAM mode.
Contact CSI for channel programming.
When in the PROGRAM mode, L/O indicates
whether a particular channel is locked out.
Battery level indicator. The indicator
flashes, along with the red LED on top of
the unit, to alert you when the
battery is low and needs to be charged
or changed. (see information above)
PR-500 Receiver Programming
The PR-500 Receiver is capable of receiving
transmissions on 19 channel frequencies. For ease
of operation, 5 channels are available as default.
If you require more transmission channels, please
contact CSI technical support (see page 4).
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
17
PR-500 Portable Receiver, Squelch Programming
Squelch
The purpose of squelch is to mute the audio
output of your receiver when the signal from
the transmitter is turned off or is too weak to be
received. Without squelch you would hear radio
noise in your earphone. The squelch on your
receiver can be adjusted so that it will mute the
audio on different RF signal strengths. This is useful
as follows:
Squelch setting: To ensure that users don’t hear
transmissions from other transmitters, set the
squelch setting to the highest level that doesn’t
squelch the receiver.
Adjusting squelch: If the receiver is going to be
close to the transmitter (i.e. in a classroom), setting
the squelch setting high so that when the
transmitter is turned off it immediately squelches
and ignores transmitters in other rooms.
• If you are in an area that has a lot of
interference, you may want to set the squelch
setting to a high setting to ensure the
interference is not picked by the receiver.
•
If you need the maximum amount of range, you
may want to consider setting the squelch
setting to a low level (0, 1 or 2). CAUTION: when
setting the squelch level low the reliability of
squelch function is comprised. This will cause
radio noise to be heard in the earphone and
there is a possibility of hearing damage.
Squelch Programming
Enter Squelch Program Mode
• Turn the unit off
• Press and hold the seek button; while still
holding seek turn the ON/OFF dial to turn the
unit on.
• Release the seek button when the Listen name
disappears and a two digit display is seen.
Squelch Adjustment
• Use the Channel UP and DOWN buttons to raise
or lower the squelch sensitivity settings.
• Lower numbers mean that a less powerful and
possibly noisy signal will be heard, but you can
have a longer range.
• Higher numbers mean that a more powerful
signal with no noise will be heard, but you may
have a shorter range.
• Squelch setting 00 is no squelch; this effectively
disables Squelching capabilities of the receiver.
Squelch setting 20 is maximum squelch
sensitivity; you must have a very strong and
stable RF signal for the unit to not engage the
squelch feature.
• Adjusting the squelch setting will keep your
PR-500 receiver from picking up noise when the
transmitter is not transmitting, or when you lose
the signal by being out of range or if
encountering interference.
NOTE: For squelch settings 1-
3, the squelch
function is slow which allows for maximum
transmission range. For squelch settings 4-20 the
squelch function is fast to ensure little radio noise is
heard during the squelch function.
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
18
PR-500 Portable Receiver, Charging, Drop-In Charging
Charging Batteries
1. The PT-500 is unique because it has an
automatic battery charger built-in. That means
that when the unit is connected to a wall
transformer or placed in a battery recharging
case, NiMH batteries will be charged within the
PT-500. Once batteries are charged the internal
battery charger will automatically turn off. This
prevents overcharging of batteries, automates
the process of charging, and makes it so you
don’t have to remember to unplug the
charger.
2. Do not attempt to charge alkaline or any other
type of non-NiMH batteries. Only charge Nickel
Metal Hydride (NiMH) batteries within the
PT-500. We recommend that you use NiMH
batteries supplied by CSI.
3. IMPORTANT: To charge NiMH
batteries, the BATTERY
SELECT switch must be
selected to NiMH. Use a
pen or small screw
driver to move the switch
(located in the battery
compartment directly below
the BATTERY SELECT label) to
the proper position.
4. Install NiMH rechargeable batteries in the
battery compartment, ensuring that proper
polarity has been observed.
NOTE: It is recommended that you only use a CSI
supplied charging transformer. Or, set the PT-500
with NiMH batteries within the unit and powered
ON in a CSI Carrying/Charging Case.
Charging Using a Drop-In Charger
To charge the batteries using a drop-in charger,
place the unit into a slot in the charger and
connect the charger to power. Make sure the
unit is fully seated in its slot. Units can be on or off
while charging.
SmartCharge™ uses a pulse charging, which
greatly extends the life of Nickel Metal Hydride
(NiMH) batteries. The entire charging process
takes
about 13 hours. CSI recommends that you
allow the charger to complete its full cycle every
time for maximum battery life.
During the charge cycle, the red LED on top of
the CSI product will flash slowly. When charging is
completed, the LED will turn off. It is not necessary
to unplug the charger; however, if you unplug the
unit from the charger and then plug it back in, it
will
begin the 13-hour charge cycle over again.
When not using the PR-500, it is recommended to
leave the unit on the charger. The charger
provides a “maintenance” charge that keeps the
battery at 100%. If the unit is not on the charger,
the battery will lose up to 20% of its charge per
month.
NOTE: Contact CSI (see page 4) for charging and
carrying case options.
WARNING: Do not place the BATTERY switch in the NiMH
position if you are not using Nickel Metal Hydride Batteries.
The NiMH position will attempt to charge any batteries in
the unit, even if they are not the proper type.
Charging non-Nickel Metal Hydride (NiMH) batteries will
result in physical harm, destruction of property and/or fire.
Top of Unit and
Battery Compartment
16-unit Drop In Charging Case shown
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
19
PR-500 Portable Receiver, Wall Transformer Charging & Operation
Charging Using a Transformer
With NiMH batteries in the unit, plug wall transformer
in CHARGING connection and into wall outlet
(as shown). LED and battery symbol will flash slowly
while charging.
1. The unit will start charging as indicated by the
flashing of the red LED and the battery symbol on
the LCD.
2.
Once the batteries are fully charged, the unit will
stop charging the batteries. Full-charge will be
indicated when all battery segments on the LCD
are illuminated and the LED near the volume
control is off.
3. The unit can be operated while batteries are
charging.
Operating the PR-500 with a Wall Transformer
1. The unit will operate normally when connected to
a wall transformer.
2. Batteries do not need to be installed in the unit to
operate using a wall transformer.
Conference System Incorporated EAST 1.800.614.7574 WEST 1.800.255.2111 www.conferencesystems.com
All specifications are subject to change without notice.
20
PR-500 Portable Receiver Specifications
Specifications subject to change without notice.
PR-500 Portable Receiver, Specifications
Specification PR-500
RF
RF Frequency Range 216.025 - 216.975 MHz
Number of Channels 19 wideband
Sensitivity .6uV typical, 1 uV maximum for 12dB SINAD
Frequency Accuracy ± .005% stability 0° to 50°C (32° to 122° F)
Antenna Uses earphone cable
Antenna Connector 3.5mm connector
Squelch Programmable in 20 steps
Compliance FCC Part 15, Industry Canada
Audio
** All system specifications are wireless end-to-end
System Frequency Response 63Hz - 10kHz (±3dB)
System Signal to Noise Ratio
(A-weighted)
SQ enabled: 80dB; SQ disabled 50dB
System Distortion <2% total harmonic distortion (THD) at 80% deviation
Output
3.5mm connectors, unbalanced, 0dBu nominal output level,
135mW maximum, impedance 32 Ohms
Controls
Set Up Controls
Programmable channel selection (see below), alkaline/NiMH batteries
and squelch, SQ enable/disable
User Controls
Volume, channel UP/DOWN, SEEK. All controls except volume are electronically
lockable.
Programming
Unit can be programmed so that only desired channels are displayed. 5 channels
are available as default. Please contact CSI for advanced channel programming.
Squelch can be adjusted for sensitivity and signal capture control. Channel
selection can be locked by holding the seek button for 5 seconds.
Indicators
LCD Display
Indicates channel, RF signal strength, squelch, battey power level and channel
programming.
LED
Red, illuminates when unit is on. Flashes when batteries are low. Flashes when
charging. Flashes when locked and user attempts to seek to another channel.
Power
Battery Type Two AA batteries, alkaline or NiMH
Battery Life (CSI batteries) 30 hours alkaline, 15 hours NiMH rechargeable
Battery Charging (NiMH only) Fully automatic, 13 hours
Power Supply Connector
2.3mm OD by 0.7mm ID, barrel type connector. 7.5VDC, center positive <250mA.
Drop in contact points for use with charging cases.
Compliance UL Listed
Physical
Dimensions 3.0 in x 1.0 in x 5 in WxDxH (7.6cm x 2.5cm x 13.cm)
Unit Weight 3.9oz (111g)
Unit Weight with batteries 5.8 oz (164.4g)
Shipping Weight 1.0 lbs (453.6kg)
Door
Manually lockable. UP, DOWN and SEEK through door, other
controls behind door (see Controls above).
Environmental
Temperature - Operation -10° to 40°C (14° to 104° F)
Temperature - Storage -20° to 50°C (-4° to 122° F)
Humidity 0 to 95% relative humidity, non-condensing
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