CPI Communications TTP(N) Series - Manual (Page 3)

2.0 General Infomation
The CPI TTP(N) series termination panels provide a reliable means of interfacing a tone remote to a two way
radio base station. The TTP series can be used with any tone remote that uses the industry standard EIA se-
quential tone format such as the CPI TR series remotes. The TTP(N) series panels are available in the following
configurations.
MODEL DESCRIPTION
TTP1(N) Board only single frequency, PTT, and monitor
TTP2(N) Board only two frequency, PTT, and monitor
-C(TTPN) Case option for the TTP(N)
There are no other options available for the TTP(N) series panels. Jumper selectable -4W/FD is standard as
well as automatic gain control and transmit and receive audio notch filters.
3.0 Installation
Connect the leased line, twisted pair 600 ohm line, or microwave link to the TTP(N) board via J2 (RJ-11 jack).
Connect an external 12 to 16 volt semi-regulated DC power supply to J1 with the positive lead to J1-2 and the
negative lead to J1-7.
Connect the receive audio from the radio to J1-6. Receive audio from the radio should be a source that is after
the squelch circuit and not affected by the radio volume control adjustment. If such as point is not easily acces-
sible you may use unsquelched audio and use the squelch circuit provided on the TTP(N).
Connect the radio microphone input to J1-1. If the microphone input is high impedence, shielded cable should
be used and jumper JP3 on the TTP(N) board should be moved to the 2&3 position.
Connect the monitor circuit of the radio to the TTP(N) board using the form “C” relay contacts at J1-8, J1-9,
and J1-10.
Connect the radio PTT line to the TTP using the contact provided at J1-4. Jumper JP7 allows you to select “key
to ground” shorting pins 1&2 or “key to + voltage” shorting 2&3.
The TTP2(N) provides momentary or latched set of form “C” relay contacts for two frequency selection. Jump-
er JP14 in position 1&2 is for latching. Position 2&3 is momentary operation.
2 Wire/4 Wire Full Duplex operation
The TTP(N) termination panel is 2 wire/ 4 wire full duplex capable by selection of the JP1 jumper on the panel.
2 Wire - Jumper JP1 should be in the 1 & 2 position
4 Wire/ Full Duplex - Jumper JP1 should be in the 2 & 3 position
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