CPI Communications TTP216 Series - Manual (Page 5)

JP5 Squelch Control Mode
Selects Squelch Control input logic level
1-2 (default) mute RX Audio when input low
2-3 mute RX Audio when input high
JP6 RX Audio Gain
Selects gain of the RX Audio amplifier
1-2 (default) selects low gain
2-3 selects high gain
JP7 PTT Keying
Selects PTT Keying output
1-2 (default) key = ground; unkey = open
2-3 key = +12 Volts; unkey = open
JP8 Local Mic Audio Control
Selects Local Mic Muting logic during remote PTT --
should be set the same as JP7
1-2 (default) key to ground
2-3 key to + voltage ( ≥ 5 Volts D.C.)
JP9 F1 / F2 Ground
Selects internal ground on F1 / F2 output
1-2 (default) internal ground disabled
2-3 internal ground enabled
JP10 F1 / F2 Relay
Selects F1 / F2 output relay
1-2 (default) relay enabled -- use F1/F2 outputs at J2, J7
2-3 relay disabled -- use F1/BCD0 output at J7
TP200 Product Description - 5/23/01 Page 7 of 28
Selects automatic Monitor with all remote PTT's
1-2 (default) automatic monitor disabled
2-3 automatic monitor enabled
JP12 Monitor Mode
Selects duration of monitor output
1-2 (default) latched -- on with Monitor command; off with PTT
2-3 momentary on with Monitor command
JP13 Monitor Ground
Selects internal ground on Monitor output
1-2 (default) internal ground disabled
2-3 internal ground enabled
JP14 Local Mic Termination
Selects Local Mic biasing and input resistance
1-3 (default) no termination
1-2 +12 Volt bias; R86 sets input resistance
3-4 input to ground; R86 sets resistance
JP11 Monitor With PTT