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GEO40A
ALPHANUMERIC PAGER
USER MANUAL
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1. Introduction
The GEO 40A is a multi-function alphanumeric POCSAG pager with high memory capacity
& large LCD display. It provides 4 keys for clear & simple operation and can be used as a
personal (on-site) pager, or alternatively, as a wide area information pager that can receive
data such as news, weather reports, etc…
2. General Description
2.1 Standard Functions
High contrast, dot matrix liquid crystal display with indicator icons, 20 characters x 2 rows.
15 level LCD contrast setting
Large memory capacity
Private Message: 65
Public Message: 100 (can be arbitrarily assigned to the 12 available public folders).
Message length: 239 characters.
Maximum 35 protected private messages.
Up to 4 paging addresses (1
st
address for private message; others selectable between private
& public)
Backlight with key trigger
Calendar with day of week
Real time clock with alarm function
Message backup during power off and battery replacement
All or single private message deletion
Lock & unlock function for public message
Public message receive alert can be enabled for individual public folder
Repeat message indication
Unread call reminder
Out of range indication
Single AAA-size battery
Low battery detection
Selectable tone, melody, vibration, or mute alert mode
Error message indication
Auto ON/OFF function
Memory capacity check
2.2 Programmable Features:
Language selection among English, French, German, Russian & Spanish
Alert duration: 2 to 20 sec
Public folder title setting
256 sub-addresses can be enabled for private capcode
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Max. 40 characters Power Up message
Unread reminder
DD/MM or MM/DD date display format selectable
Normal or word wrap display mode
Pre or Post time stamp facility
30 – 180 seconds no alert period for repeated message
‘IN RANGE’ & ‘OUT RANGE’ indicator display mode & grace time setting
On-line or OTA programming - for Public message receive mode only
2.3 Electrical Specification
• Rx Frequency 135MHz~175MHz; 278MHz-280.999MHz
448MHz-471.999MHz
• Sensitivity @1200bps
− Best position: 20.5dBµV/m 512ps; 22.5dBµV/m /1200bps
• Adjacent Channel Rejection > 60dB
• Spurious Rejection
135-174.999MHz;278-280.999MHz > 55dB
448-471.99MHz > 50dB
• Image Rejection
135-174.999MHz;278-280.999MHz >50dB /-42.8MHz; -910KHz
448-471.999MHz >40dB/-42.8MHz; 50dB/-910KHz
• Intermodulation Rejection >50dB
• Frequency stability +/- 10ppm
• Deviation Carrier +/- 4.5KHz
• Tone alert level > 80dBc at 30cm away
• Nominal Battery Life more than 30 days (‘AAA’ alkaline battery)
2.4 Technical Specification
• Code Format POCSAG
• Bit Rate 512/1200bps switchable
• Channel Space
− Receiver: 25KHz
• Modulation Method FSK-NRZ
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2.5 Mechanical Specification
• Unit size (mm): 77mm(L)×53mm(W)×20.5mm(H)
• Display area (mm) : 63.9mm(L)×27.4mm(W)
• No. of Keys: 4
• Door: Main battery door
• Environmental concern: Drop test
– GEO Spec., QFD-07
Thermal test
– GEO Spec., QFD-09
Vibration test – GEO Spec., QFD-10
Compression Test – Sharp Spec.
2.6 Appearance
B
C
D
E
F
G
HI
A
A : Battery door F : Read/Confirm key
B : Door lock G : Right key
C : Chain H : Left key
D : Buzzer I : Select key
E : Screen
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2.7 LCD display description
(1) LCD display screen
(2) Power off display
(3) Power on standby display
(4) Time display mode
(5) Alarm display mode
(6) The content of call header
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When the message is received, the first line of each message is the call header
3. Operation Illustration
(1) Turn on the pager
When the pager is in “OFF” state, press “Read/Confirm” key for several seconds and the pager will
turn on with sound/vibration for 16 seconds. Press any key to stop the sound/vibration
Then the pager will be in standby mode
(2) TIME, ALARM, AUTO ON/OFF and MELODY function menu
Press “SELECT” key until the following menu appears.
Press
(Left key) and (Right key) to select TIME, ALARM, AUTO or MELODY setting.
Press “Read/Confirm” key to enter the setting screen.
I) TIME adjustment
Use ‘Left’ or ‘Right’ key to change the setting, use “Read/Confirm” key to confirm the current
setting & jump to the next field. The setting is finished after the day of week is confirmed.
II) Alarm Setting
Use ‘Left’ or ‘Right’ key to change setting, use “Read/Confirm” key to confirm the current setting
& jump to the next field.
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III) AUTO on/off
Use ‘Left’ or ‘Right’ key to change setting, use “Read/Confirm” key to confirm the current setting
& jump to the next field. The sequence is ON time & then OFF time.
IV) MELODY
Use ‘Left’ or ‘Right’ key to select melody, then use ‘Read/Confirm’ key to confirm.
(3) CONTRAST, ALERT, MEMORY AND POWER OFF function menu
I) Press “SELECT” key until the following menu appear.
II) Press “Left” or “Right” key to select CONTRAST, ALERT, MEMORY or POWER OFF.
Press “Read/Confirm” key to confirm
III) CONTRAST adjustment
Use ‘Left’ or ‘Right’ key to change contrast, then use ‘Read/Confirm’ key to confirm.
IV) ALERT setting
If user selects “ALERT” the following menu is shown
If BUZZER (Beeper) is selected, the beeper will beep and the screen will change as below:
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The buzzer icon is turned on
If MOTOR is selected, there will be a short vibration and the screen will change as below:
The Vibrate icon is turned on.
If MUTE is selected , then the following screen will be shown:
Buzzer (Beeper) and vibrate icon will not be displayed.
V) MEMORY
If MEMORY is selected and the memory is full, the following menu is shown:
If memory is not full, the remaining memory percentage will be shown
VI) Power off
The user may switch off the pager so as not to be disturbed. In this state, the pager will not receive
any messages.
Press “SELECT” key to choose “Power off” and then press the “Read/Confirm” key. The pager
will then enter the off mode.
Clock display
In standby mode, press “SELECT” Key to display the clock:
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(4) Messages Reading
I) Reading message
At the standby mode and the clock display mode, press “ Read/Confirm” key. There will be an
indication as follows:
If there are messages stored, the menu will be shown as follows:
Pressing the “Left” and “Right” keys, the messages can be viewed back & forth, press
“Read/Confirm” key to read the selected message:
After finished reading the last message, there will be an end of message indicator:
II) Messages: locking/unlocking/deleting
When reading a message, the user may lock/unlock/delete the message
When unlocking a message, the above menu will be shown when the “SELECT” key is pressed.
If the user chooses “Lock” and presses the “Read/Confirm” key, the message will be locked and
the pager will return to the message reading mode.
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If DELETE is chosen, the pager will display the following menu:
the message will be deleted and the pager will return to the message reading mode.
If the message is already locked, the above menu will be shown. Select “Yes” and press
“Read/Confirm” to unlock the message.
If all messages are deleted, the display will read as follows:
This menu will remain for four seconds and will then return to the standby mode.
(5) Back Light Operation
Press “SELECT” and hold down for two seconds. The backlight will be turned on. When the
pager returns to the standby state & LCD is turned off, the backlight will be turned off
automatically.
(6) WA RN IN G
I) When “LOW CELL” is indicated, change the battery immediately. The battery should also be
removed from the pager when not in use for long periods. Failure to do so may result in the
battery leaking, which will cause irreparable damage to the pager and will invalidate any
warranty pertaining thereto.
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II) Do NOT subject this equipment to:
Mechanical shock
Excessive humidity or moisture
Extremes of temperature
Corrosive liquids
This equipment is designed for indoor use, unless expressly stated otherwise, and must not be
used in classified Hazardous Areas, including areas containing explosive or flammable vapours,
unless express authorization has been given in writing by the manufacturer. If in doubt, consult
your local product dealer for further information.
Only use a damp cloth for cleaning (not liquid or aerosol based cleaners), and ensure that the
battery is removed from the unit prior to beginning the cleaning operation.
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