ZETRON 025-9581M, Руководство по установке и обслуживанию

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Appendix A: Details of Model 6203/6204 Hardware
152 025-9581M
Connector J5 (Rx and Handset)
This connector contains the connections for the receiver audio and the handset option, if
installed.
The pin connections for the J5 connector are listed in Table 6 .
Table 6: Transponder Board Connector J5 Pinout
Pin Description
Pin 1
(Rx COR) This is an input that is typically connected to a radio Carrier Operated Relay
(COR) output. It gives the Model 6203 an indication of when the radio is receiv-
ing a carrier signal (channel busy). It can also be used as a “Channel Grant” sig-
nal input in a trunked radio system. Potentiometer “COR” (R84) adjusts this
signal threshold and LED DS33 can be used to monitor its state. Jumper JP9 is
also associated with this input as well as the Communications Mode selection in
the Software Configuration Program.
Pin 2
(GND) This pin is connected to Model 6203 chassis ground.
Pin 3
(+AUD Rx) This is the positive side of the 4-wire, transformer coupled, audio input. JP10
sets the input impedance of this input and potentiometer “4-W RCV” (R107)
adjusts the audio input level.
Pin 4
(-AUD Rx) This is the negative side of the 4-wire, transformer coupled, audio input. JP10
sets the input impedance for this input, and potentiometer “4-W RCV” (R107)
adjusts the audio input level.
Pin 5
(EAR) This is an output to the handset speaker. When Pin 7 (HKSW) is grounded (off-
hook), all audio (except FFSK packet reception) is routed to this pin. When
“HKSW” is “on-hook,” all audio to this output is muted except when pin 8
(PTT) is grounded. When “PTT” is grounded, then audio from pin 6 (MIC) is
routed to this output. Potentiometer “EAR” (R64) adjusts the output level of this
pin.
Pin 6
(MIC) This is the handset microphone input. When Pin 8 (PTT) is grounded, the input
from this pin is routed to either the Model 6203 transmit or PA circuits, based on
the state of pin 7 (HKSW). Potentiometer “MIC” (R63) adjusts the input level
of this pin.
Pin 7
(HKSW, Hook-
switch) This is the handset hook switch input. It determines how the Model 6203 routes
audio coming in on pin 6 (MIC) whenever pin 8 (PTT) is grounded. When pin 7
is grounded (off hook) and the handset PTT is pressed (grounded), the Model
6203 attempts to go into talkback mode with the dispatcher. When in talkback
mode, audio from MIC is routed to the Model 6203 transmit circuits.
When this pin is not grounded (on hook) and the handset PTT is pressed, the
Model 6203 will enable PAs and audio from “MIC” is routed to the Model 6203
PA output circuits.
Pin 8
(PTT) This is the handset push-to-talk input. When this input is grounded audio from
Pin 6 (MIC) is routed to the transmit and PA circuits of the Model 6203.
Pins 9 to 12
(GND) These pins are connected to the Model 6203 chassis ground.