Instruction manual

Connect Systems Inc. - Model 9800 Page 41
TYPICAL APPLICATIONS FOR THE AUXILIARY RELAY
(Option 9805)
Remote_CTCSS_Enable/Disable: When using the 9800 as a Remote Base, it
is desirable to monitor the channel for activity prior to dispatching.
The auxiliary relay can be used to allow the remote switching of the
radio's hook switch. Pressing 0 turns the relay on. Pressing * turns
the relay back off. Thus the radio can be set to carrier receive and
back to DPL/CTCSS operation remotely.
Enter 1 (Monitor) on line 3.1. Connect the normally closed relay
contacts (W and NC) in series with the radio's hook switch.
Disabling_tone_squelch: Many of the new microprocessor controlled
radios will not transmit when the microphone is on hook. The auxiliary
relay can be used to fool the radio into thinking the MIC is off-hook.
Enter 0 (Connect) on line 3.1. This will energize the relay whenever
the 9800 is in use. Connect the normally closed contacts (W and NC) in
series with the radio's hook switch.
Relay_Switched_PTT: If the radio's unkeyed PTT voltage exceeds 16 VDC
or if inverted keying is required (closure to 12V) the auxiliary relay
must be used to key the transmitter.
Enter 2 (KEY) on line 3.1. Connect the radio's PTT line to one of the
Aux. Relay contacts on the rear barrier strip. Connect the other Aux.
Relay contact to 12 VDC for inverted keying or to GND for sink to
ground keying. Make sure JP-7 is strapped from the center to the NO
position. The PTT connection on the rear barrier strip should not be
connected.
Remote_Relay_Function: In some installations it may be desirable to
remotely control (switch) something from the mobile. e.g. change
channels, change CTCSS tones, change antennas etc.
Enter 3 (REMOTE FUNCTION) on line 3.1. Then select a three digit
control code on line 3.2. If the code selected was 789, you would turn
on the Remote Relay by sending #789. To turn off the relay send ##789.
CONNECTING THE RELAY
Connect the device requiring remote control to the two terminals
labelled 'AUX. RELAY' on the rear panel barrier block. The 9800 is
supplied with the relay strapped for normally open operation. if
normally closed operation is desired, see JP-7 on page 9 for details.