3
2
1
6
5
4
9
8
7
12
11
10
I/O connector plug (rear
view, as it would be seen
while wiring); the beveled
orientation corners shown
correspond to the plug's
mating
PCB-mounted
sockets.
Always be careful to double
check pin numbering on the
connector block and the
wiring diagram before
inserting the pin in the block!
R-5 / Mar 97
R-5 / Jan 97
TELEPHONE INPUT CHANNEL WIRING
This section calls out specific pin-by-pin wiring instructions for the
telephone input channel audio connector. If you need more general
information concerning the R-5 console wiring system and supplied tools,
please refer to Chapter One, pages 1-6 and 1-7.
Telephone Input (Audio Connections)
Telephone input channel audio connections are made at the channel's
LOWER 12-pin PHONE/TEL connector. These consist of electronically
balanced inputs for an external mono line level signal, the console's mono
TEL output, and two caller inputs (one for –10dBu signals and the other for
+4dBu levels).
Pin 1 - EXTERNAL INPUT, shield
Pin 2 - EXTERNAL INPUT, low
Pin 3 - EXTERNAL INPUT, high
Accepts a mono +4dBu level balanced signal. Feeds that signal to the
console's TEL bus. Useful as a pre-fader, pre-on/off announcer mic feed
(i.e., from a mic channel insert out point) to the caller.
Pin 4 - TELEPHONE OUTPUT, shield
Pin 5 - TELEPHONE OUTPUT, low
Pin 6 - TELEPHONE OUTPUT, high
The console's mono TEL bus output signal (+4dBu, electronically
balanced). This port is used to get a signal back to the caller via the station's
telephone hybrid (see below).
Pin 7 - FROM CALLER (+4dBu), shield
Pin 8 - FROM CALLER (+4dBu), low
Pin 9 - FROM CALLER (+4dBu), high
Pin 10 - FROM CALLER (-10dBu), shield
Pin 11 - FROM CALLER (-10dBu), low
Pin 12 - FROM CALLER (-10dBu), high
These ports are used to get the caller's voice signal into the console.
There are two available: one for low level signals (–10dBu) and the other for
high level (+4dBu). The signals cannot come directly off a telephone
company line, but must first interface through your station's telephone
hybrid. This hybrid's output actually feeds the console's caller input ports.
If you will be using the –10dBu port and the source signal is unbalanced,
be sure to tie LOW and SHIELD together at the source end.
T
I
ELEPHONE
NPUT
Page 4 - 4
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