DLH6420
Code Distributor
Installation and Operations Manual
Model Number: DLH6420
Description: PTZ Control Code
Data Distributor
CONTENTS
Section Page
1.0 REGULATORY NOTICES ..............................................................3
2.0 DESCRIPTION .......................................................................... 4
2.1 MODELS..............................................................................4
2.2 FEATURES ..........................................................................4
2.3 CERTIFICATIONS ................................................................4
3.0 PRE-INSTALLATION INFORMATION ..............................................5
3.1 FRONT VIEW........................................................................5
3.2 REAR VIEW .........................................................................5
4.0 INSTALLATION ..........................................................................7
5.0 OPERATION ...............................................................................8
6.0 SPECIFICATIONS ........................................................................8
LIST OF ILLUSTRATIONS
Figure Page
1 DLH6420, Front View ....................................................................5
2 DLH6420, Rear View .....................................................................5
3 DLH6420, Rear View Connector Details ............................................6
4 DLH6420, Daisy-Chain Configuration ...............................................7
1.0 REGULATORY NOTICES
NOTE: This equipment has been tested and found to comply with the limits of
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 the 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 and correct the
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into a different outlet than the one
which the receiver/driver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
2.0 DESCRIPTION
The DLH6420 code distribution unit is a 16-channel RS-422 transmit
only (2-wire and ground) distributor. It was designed as an
accessory of the System DLH4200B, but can be used with any
system that uses RS-422 serial communications. The product will
primarily be used to install pan/tilt and dome receivers in a “star’’
configuration.
2.1 MODELS
DLH6420 16-channel RS-422 transmit only distributor
2.2 FEATURES
The DLH6420 has the following features:
• Two 8-position, RJ-45 connectors in parallel, providing an input
from a controller and an output for an additional daisy-chained
unit
• Sixteen 3-position screw terminal connectors used to output 16
RS-422 transmit only code lines
• Two-pin terminal connector (refer to figure 3) for an external 10
to
24 VAC/VDC power source
• Standard 120/230 VAC 50/60Hz line input (auto-ranging)
2.3 CERTIFICATIONS
The product identified below has been tested and certified for
agency compliance as noted.
Agency Compliance Certification
Model
CCC
CE
DLH6420
Applicable CE,CCC directives/standards:
• 93/68/EEC–CE Mark Directive
89/336/EEC, 92/31/EEC–Electromagnetic Compatibility (EMC)
Directives
EN 55022: 1984 Class B–Radio-frequency emissions limits
EN 50082-2: 1992–Immunity standard
IEC 801-2: 1984–ESD immunity
IEC 801-3: 1984–Radiated field immunity
IEC 801-4: 1988–Electrical transients
3.0 PRE-INSTALLATION INFORMATION
3.1 FRONT VIEW
Figure 1 illustrates the front view of the DLH6420 unit, which uses the
standard panel layout for the DLH4200B product line. A power LED indicator
(green) is located on the left and a data LED (red) is located on the right
side of the front panel of the unit. The power LED will light when power is
applied to the unit; the data LED will light when a transmission from the
controller is received by the DLH6420.
3.2 REAR VIEW
Figure 2 illustrates the rear (working side) of the DLH6420 unit. Note the
three-position terminal screw data output lines numbered 1 - 16, from left
to right. Next to that are the RJ-45 female IN/OUT communication ports and
the external, two-pin independent power input. Finally, the standard AC
power input cord connection is on the far right.
Figure1．
．．
． DLH6420 Front View
Figure2．
．．
． DLH6420 Rear View
DLH6420
Figure 3 further details the mating plugs, pin-outs, and so on pictured in Figure 2.
Note that for externally supplied power sources, the DC supply hook-up can handle
forward or reverse hook-up of the input source. The internal bridge can handle either
polarity. There are, naturally, no polarity concerns with an externally supplied AC power
source.
Figure3.
DLH6420
Rear View Connector Details
PIN1
PIN8
IN
PIN1
PIN8
OUT
RJ45 COMMUNICATION CONNECTORS
IN INPUT FROM CONTROL UNIT
OUT USED FOR CABLING SUBSEQUENT UNIT
AC LINE CORD INPUT
100~240VAC@50/60Hz
NOTE
：
：：
：
If an exter
nal AC power
supply or DC power source is used,
then these power sources should be
capable of supplying at least 8 watts.
WARNING：
：：
： If using an external
power source, it must be isolated
(floating).
PIN8
PIN1
IN
OUT
PIN1=TX+
PIN2=TX-
.
.
.
.
.
.
PIN7=RX-
PIN8=RX+
WARNING：
：：
： If using an external
power source, it must be isolated
(floating).
4.0 INSTALLATION
Installation of the unit is straightforward. The unit is rack/wall
mountable and is only 8" deep (20.25 cm). In addition to the 16 lines
available for output with one unit, eight units may be daisy-chained
together. This will allow 128 receivers (that support 128 address
settings) to be connected on a single Sercom port. Figure 4 illustrates
two units daisy-chained providing 32 independent drive lines.
Figure4. DLH6420 Daisy-Chain Configuration
To a System Matrix Control
Unit
Unit1 RJ45
Connector OUT
Unit1 RJ45
Connector IN
5.0 OPERATION
The DLH6420 unit works as a distribution repeater for expanding one RS-
422 communication port into 16 isolated and buffered RS-422 ports. The
primary use for the DLH6420 is to provide quick, easy, and proper data-
line distribution for serial type pan/tilt and dome receivers. In the case of
these isolated RS-422 drive lines, the remote devices may be located as
far as 4,000 feet (1,219 m) away from the controller, depending on the
physical parameters of the connection.The unit is ideal for use on larger
switching systems where it becomes desirable to “home-run” the RS-422
data lines for controlling pan/tilt or dome receivers.
6.0 SPECIFICATIONS
ELECTRICAL
Input Voltage: 120/230 VAC, 50/60 Hz, auto-ranging, or
Independent external source, 10-24 VAC/VDC
Consumption: 30 vA
Data Ports
Input: One RS-422, RJ-45 female connector
Output: One RS-422, RJ-45 female connector
Drive Lines: Sixteen 3-position screw-terminals with mating plugs
Fusing: 500 mA, 250 V
Indicators: 1 power LED, green
1 data LED, red
MECHANICAL
Dimensions:
Base Only: 1.75" H x 17”W x 8”D (4.45 x43x20. 45 cm)
With Rack Ears: 1.75" H x 19”W x 8”D (4.45 x48.26x20. 45 cm)
Operating
Temperature: 32° to 122°F (0° to 50°C)
Weight: 6.6 lb (3 kg)
GENERAL
Mechanical
Connectors
Power: AC power cord input, 3-wire, #18 AWG
2-pin screw terminal with mating plug for external
power source
RS-422: Two RJ-45, female
RS-422 Breakout
Ports: Sixteen 3-pin headers with mating plug; connectors can
accept 14–28 AWG
(Design and product specifications subject to change without notice.)
NOTE: If external AC transformer is used, it must be capable of supplying
at least 8 watts. DC source can be hooked up without regard to polarity.
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