HLN6923A October 12, 2005
Options and Accessories Installation: Accessory Connector Assembly Details (P2) (All Models Except 110W) 3-11
1
This pin must be connected to ground by jumper on accessory cable if emergency is disabled, even if disabled by
CPS. If enabled, this line must be grounded via a switch, which is normally closed. The emergency debounce time
is programmable via CPS.
2
Pulling this line to ground will activate PTT function, activating the AUX_MIC input.
3
Fixed level (independent of volume level) received audio signal, including alert tones. Flat or de-emphasis are pro-
grammed by CPS. Output voltage is approximately 100 mVrms per 1kHz of deviation. The DC offset is 1.4V.
4
This output is used to detect when a rear microphone accessory is taken off-hook, to override PL to alert the user
to busy traffic prior to transmitting.
5
This microphone signal is independent of the microphone signal on the front microphone connector. The nominal
input level can support 300 mVrms for future APCO accessories. The DC impedance is 660 ohms and the AC
impedance is 560 ohms.
6
See Table 2-1 in Chapter 2 for wiring options.
Note: Please see the XTL 2500 Basic Service manual (Motorola publication part number 6815853H01) for more
detailed descriptions of these pins.
Table 3-3. Rear Accessory Jack Pin Functions
Pin
No.
Pin Name Pin Function
Pin
No.
Pin Name Pin Function
1 GND Ground 14 GND Ground
2 BUS+ SB9600 BUS+ Data 15 EMERGENCY Emergency
1
3 BUS- SB9600 BUS- Data 16 PTT* Pus h To Tal k
2
4 TXD RS232 Transmit Data 17 ONE WIRE One-Wire Data
5 RXD RS232 Receive Data 18 VIP OUT 1 Vehicular Interface Output
6 USB- USB - (Data) 19 VIP OUT 2 Vehicular Interface Output
7 USB+ USB + (Data) 20 SPKR+ Speaker + (3.2 ohm
minimum impedance)
8 RESET SB9600 RESET 21 RX FILT AUDIO Receive Filtered Audio Out
3
9 BUSY SB9600 BUSY 22 MONITOR Monitor Overrides PL
4
10 CTS RS232 Clear-To-Send 23 AUX MIC Rear Microphone Input
5
11 RTS RS232 Request-To-Send 24 SW B+ Switched Battery Voltage
12 USB PWR USB Power (5V from USB
accessory/cable)
25 Ignition Ignition Sense
6
13 CHAN ACT Channel Activity (qualified
received signal)
26 SPKR- Speaker - (3.2 ohm minimum
impedance)
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