Rear Accessory Connector - Vertex Standard VXD-R70 Installation Manual

Chapter 3 Indicators and Connectors
3.2.2

Rear Accessory Connector

The rear accessory connector is located above the ethernet connector. Most of the Vertex Stan-
dard-approved accessories are supplied with female terminals crimped to a 20-gauge wire specifi-
cally designed to fit the housing of the rear accessory connector.
Insert the female terminal into the accessory connector housing in the appropriate locations. The
accessory connector housing is provided together with the accessory. Connect the accessory
connector housing to the rear accessory connector on the back of the repeater. Do not use other
generic terminals in the housing. Generic terminals can cause electrical intermittences and may
cause damage to the housing.
Pin No. Pin Name
1 D+
2 D-
3 VBUS
4 USB/MAP_ID GND
5 MAP_ID_2
6 MAP_ID_1
7 SW B+
8 PWRGND
9 SPKR-
10 SPKR+
11 Tx Audio
12 Audio GND
13 AUX Audio 1
1 Pulling this line to ground activates the PTT function, thus activating the AUX_MIC input.
2 Fixed level (independent of volume level) received audio signal, including alert tones. Flat or de-emphasis are programmed by the
Programming Software. Output voltage is approximately 330 mVrms for 1kHz of deviation.
3 This input is used to detect when a rear microphone accessory is taken off-hook.
4 This microphone signal is independent of the microphone signal on the front microphone connector. The nominal input level is
80mVrms for 60% deviation. The DC impedance is 660 ohms and the AC impedance is 560 ohms.
Page 14
Table: Rear Accessory Connector Pin Functions
Pin Function
USB + (Data)
USB - (Data)
USB Power
(5V from USB accessory/cable)
USB/MAP_ID Ground
Accessory Identifier
Accessory Identifier
Switched Battery Voltage
Ground
Speaker -
(3.2 ohm minimum impedance)
Speaker +
(3.2 ohm minimum impedance)
Rear External Microphone Input
Audio Ground
Public Address 1
Pin No. Pin Name
14 Rx Audio
15 AUX Audio 2
16 GND
17 GP5-1 (PTT)
18 GND
19 GP5-2 (Monitor)
20 GP5-6
21 GP5-3
22 GP5-7
23 EMERGENCY
4 24 GP5-8
25 IGN SENSE
26 VIP-1
Pin Function
Receive Live Audio 2
Public Address 2
Ground
5V Level GPIO, PTT Input 1
Ground
5V Level GPIO, Monitor Input
3
5V Level GPIO
5V Level GPIO,
Channel Activity Function
5V Level GPIO
Emergency Switch Input
No connection
No connection
12V Tolerant, 5V GPIO,
External alarm