B-1

DSUB 15-pin Accessory Connector

Pin 1: AF IN (ANALOG INPUT)

External Microphone Input. Nominal input level is 6
mV at 600-ohm.
When connect the External Microphone to this port,
insert a 0.1 µF coupling capacitor between the micro-
phone and this port; as shown illustlation.

Pin 6: EXT PTT

Shorting this port to ground causes the transceiver to
be placed in the Transmit mode, while opening the
connection to this port returns the transceiver to the
Receive mode. Opening voltage is 5 V, closed current
approx. 5 mA.

Pin 7: TRX

This port is intended for controlling an external TX/
RX switching circuit. This port is open collector out-
put which can sink approx. 100 mA when active. Max.
voltage is 16V.

Pin 8: IGN (IGNITION SENSE FEATURE)

The VX-2100/-2200 may be automatically be switched
to the STND-BY mode when the vehicle's ignition key
is turned on. Maximum current is 20 mA.

Pin 9 - 12: ACC1 - ACC4 (ACCESSORY PORT)

These port features can be programmed via the CE82
programmer. Each port is open collector output which
can sink approx. 100 mA when active. Max. output 16V.
When the input is selected, it becomes active between
2V and 16V.

Pin 13: ACC5 (ACCESSORY PORT)

The port 5 is available to set only for Output function,
and active logic is the opposite side against the Port 1
~ 4.
Max.output 5V, closed current approx. 1 mA.
(CMOS output)

Pin 14: ACC6 (ACCESSORY PORT)

The port 6 is available to set only for Input function,
and active logic is the opposite side against the Port 1
~ 4.
Max.input 5V. (CMOS input)

Pin 15: GND

Chassis ground

Pin 2: AF OUT (ANALOG OUTPUT)

Low-level receiver output. Peak signal level is 150 mV
at 600-ohm.

Pin 3: AF GND

Ground for all logic levels and power supply return.

Pin 4: DC OUT (13.6 V DC OUTPUT)

Switched 13.6V output for supplying power to an ac-
cessory.

Pin 5: RSSI (ANALOG OUTPUT)

A DC voltage proportional to the strength of the sig-
nal currently being received (Receiver Signal Strength
Indicator) is provided on this pin. This low impedance
output is gererated by the receiver IF sub-system and
bufferd by an internal op-amp. Typical output volt-
ages are 1 V (@No Signal Input) through 2.0 V (@50 dB
Signal Input).