Tone Remote Control Installation; Table 11. Accessory Connector 2 Pins: Tone Remote Control Operation - Motorola ASTRO Spectra Instruction Manual

Tone Remote Control
Installation
TRC Adjustment
Procedure
Transmit
Receive
6881086C22-B
NOTE: The Tone Remote Control Option (L146) must be ordered for
this option to be available.
Tone remote desksets are to be connected to Accessory Connector 2 on the
rear panel of the Consolette. See Figure 2 on page 6. Two-wire or four-wire
operation is available. Two-wire operation uses Line1+ and Line1- for both
receive and transmit audio. Four-wire operation uses Line 1+ and Line1- for
receive audio and Line2+ and Line2- for transmit audio. The default setting for
wireline operation is two-wire. Impedance flexibility of 600 Ω or 900 Ω between
Line1+ and Line 1- is also provided. The default setting for impedance is 600 Ω .
For information regarding changing wireline operation or impedance, refer to
Table 3 on page 10 for S100 and Table 4 on page 10 for S101. Refer to the
applicable tone remote deskset manual for information regarding deskset
operation. Table 11 indicates the Accessory Connector 2 pins used for tone
remote control operation.

Table 11. Accessory Connector 2 Pins: Tone Remote Control Operation

Pin Number
Since the potentiometers are factory adjusted, the following information is for
reference only.
R529 is set fully clockwise, then turned counterclockwise one-half turn. This
sets the AGC gain to somewhat less than maximum. If AGC is disabled with
S100-4 set to the ON position, then R529 should be adjusted to obtain 0.7 VAC
at TP1 when a 1 kHz audio signal is sent from the console.
A 120 mVrms, 1 kHz audio signal from a 600 Ω source is applied to the Line 2+
and Line 2 input pins at Accessory Connector 2. The Consolette is placed in
–
transmit and R569 is adjusted to obtain 3 kHz deviation.
While receiving a 1 kHz, 3 kHz deviation audio signal, R545 is adjusted for
0 dBm (775 mVrms) across a 600 Ω load at Line1+ and Line1
Accessory Connector 2.
Installation: Remote Control Installation
Signal Name
1 LINE1+
3 LINE2+
16 LINE1–
11 LINE2–
output pins at
–
17