CalAmp PC-UC-2 Manual De Usuario
«ProductName»
User Manual
7M303-1 Rev A2
Page 35
10 Specifications
Principles of Operation
The
Peoplefinder II
is a multi-functional unit which can be used to communicate between the built-in
speaker/microphone, pagers and two-way radios. The internal circuitry is comprised of numerous elements as
shown on the block diagram below. These include radio transceiver, microprocessor, front panel I/O, DTMF
encoder/decoder, CTCSS encoder/decoder, speech synthesizer (DAC), microphone amplifier, speaker amplifier,
analog filters, limiting amplifier and analog switch matrix. The microprocessor controls all circuitry as needed
for the desired communication function. The encoders generate needed audio signals and the decoders detect
incoming control signals on the received audio. Analog switches route the analog signals within the unit.
shown on the block diagram below. These include radio transceiver, microprocessor, front panel I/O, DTMF
encoder/decoder, CTCSS encoder/decoder, speech synthesizer (DAC), microphone amplifier, speaker amplifier,
analog filters, limiting amplifier and analog switch matrix. The microprocessor controls all circuitry as needed
for the desired communication function. The encoders generate needed audio signals and the decoders detect
incoming control signals on the received audio. Analog switches route the analog signals within the unit.
Peoplefinder II
Block Diagram
Encoder/Terminal general
Paging Format .................................................................... POCSAG ( tone, numeric, and alpha at 512,
1200 or 2400bps)
TWO-TONE and GROUP-TONE optional
TWO-TONE and GROUP-TONE optional
Squelch formats .................................................................. CTCSS or carrier squelch
Serial port protocols ........................................................... TAP, COMP2, COMP1
Pager database maximum size ............................................ 1000 individual pagers
Maximum page length ........................................................ 250 characters
Maximum pre-programmed alarm message ....................... 40 characters
Maximum number of pager groups .................................... 16
Maximum number of pagers per group .............................. 75
LCD display size ................................................................ 20 characters X 2 lines
Speaker audio ..................................................................... 1 watt maximum at <5% THD
Power supply ...................................................................... External 12.0V&5.0VDC, 2A, DIN connector.
Weight ................................................................................ 3.5lbs.
Temperature range .............................................................. -10-+40C
Processor ............................................................................ 80386EX
Non-volatile flash memory size.......................................... 2M bytes
External keyboard interface ................................................ Standard PS/2
Serial port protocols ........................................................... TAP, COMP2, COMP1
Pager database maximum size ............................................ 1000 individual pagers
Maximum page length ........................................................ 250 characters
Maximum pre-programmed alarm message ....................... 40 characters
Maximum number of pager groups .................................... 16
Maximum number of pagers per group .............................. 75
LCD display size ................................................................ 20 characters X 2 lines
Speaker audio ..................................................................... 1 watt maximum at <5% THD
Power supply ...................................................................... External 12.0V&5.0VDC, 2A, DIN connector.
Weight ................................................................................ 3.5lbs.
Temperature range .............................................................. -10-+40C
Processor ............................................................................ 80386EX
Non-volatile flash memory size.......................................... 2M bytes
External keyboard interface ................................................ Standard PS/2
Control Bus
Mic
Speaker
Antenna
Analog
Switch
Matrix
Radio
Transceiver
Front
Panel
Filter
Limiter
DTMF
CTCSS
DAC
Microprocessor
RS232 Port 1
RS232 Port 2
Keyboard
Alarm Inputs