68009482001 September 9, 2011
Cabling Diagrams and Rear Panel: Rear Panel Connector Pin Descriptions 6-5
6.6.5 ACCESSORY 1 CONNECTOR J104 (DB-25)
Table 6-5. Accessory 1
Pin Signal Name Description
1 TX_ACTIVITY* Active low logic output to indicate when the
Consolette is transmitting.
2 GND Ground
3 N/C Not Used
4 RX_AUDIO[A(rx)] Receive audio from Codec at a fixed level of
approximately 300 mVrms. Part of the APCO
interface.
5 FORCE_FAIL* Active low logic input to bootstrap Consolette
Controller.
6N/C Not Used
7 N/C Not Used
8 EXT_PA_AUD Receive audio and tones from Codec at a fixed
level (300 mVrms) for use with an external PA.
9 EXT_PA_ACTIVITY* Active low logic output to indicate when there is
activity on the EXT_PA_AUD output pin.
10 PTT* Active low logic input for brick transmit.
Corresponds with AUX_TX [A(tx)] audio path.
Part of the APCO interface.
11 N/C Not Used
12 GND Ground
13 EMERGENCY* Active low logic input to activate an emergency
transmission.
14 N/C Not Used
15 N/C Not Used
16 MUTE_IN* Active low logic input to instruct all audio
outputs to be muted.
17 AUX_TX[A(tx)] Transmit audio w/o mic biasing. Goes with
PTT*. Nominal level is 300mVrms. Part of the
APCO interface.
18 VCC_5V 5Vdc output from consolette when system on.
19 N/C Not Used
20 N/C Not Used
21 CHAN_ACT_RELAY_IN Input to solid state relay to indicate when the
RX_AUDIO path is being driven. Relay is
closed upon verification of a qualified signal
being presented by the receiver. May still be
active even if speakers mutes. (ex. Headset
audio)
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