User's Manual

Pin 9: On-Air detect.
Trunking: Connect to a point in the radio that indicates the mobile transmi er is actually on the
air.
This is not the same as mic PTT. If pin 9 goes posi ve during transmit, program the on-air detect
line for ac ve high (common data). If pin 9 goes to ground during transmit, program the on air
detect line for ac ve low.
Conven onal: Used for local mic repeat indica on from the mobile. Connect pin 9 to pin 4 of
the SVR-P250 and program the on-air detect line for ac ve low. Solder jumper J5 will connect
pin 9 to pin 4 (PTT output) and can be used on conven onal systems only.
Pin 10: Emergency Output. Connect to the Emergency input on the mobile radio. On Motorola radios,
the Emergency input opens from ground on ac va on and jumper J13 should be in the “NC”
posi on.
On all other radios, the Emergency input pulls to ground on ac va on and jumper J13 should
be in the “NO” posi on.
Install the WB-1000 in the vehicle using an AMPS moun ng bracket hardware. Install the unit where
it will be easily visible by the driver and will not interfere with the drivers vision or cons tute a hazard during a
vehicle collision. The WB-1000 mounts in the bracket using the four 8-32 x ¼” machine screws. Do not use
longer screws to mount the WB-1000 to the bracket or damage may result.