M850-00
T856/857 Optional Features
G2.1
Copyright TEL 31/09/98
2 T856/857 Optional Features
2.1 Audio Processor
The T856 and T857 come with a number of link selectable features which give added
system flexibility.
Note:
The tables in this section are the same as those in Section 3.5 in Part C. They
have been repeated here for ease of reference.
2.1.1 Link Details
Use the following table to set up the audio processor to the configuration you require.
You should set the audio processor links before carrying out any of the tuning and
adjustment procedures. The factory settings are shown in brackets [ ].
Plug Link
a
a. The letters in this column and in the table in Section 2.1.2 below refer to the identification
letters screen printed onto the PCB beside each pair of pins.
Function
PL205
1-2
[3-4]
5-6
A
B
C
not connected
microphone pre-amp. output to compressor input
microphone pre-amp. output to multiplexer input
PL210
[1-2]
3-4
5-6
L
M
N
multiplexer output to pre-emphasis input
multiplexer output to limiter input
multiplexer output to compressor input
PL215
1-2
[3-4]
5-6
7-8
9-10
G
H
I
J
K
not connected
compressor output to multiplexer input
compressor output to limiter input
compressor output to pre-emphasis input
not connected
PL220
1-2
[3-4]
5-6
D
E
F
pre-emphasis output to multiplexer input
pre-emphasis output to limiter input
not connected