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INSTALLATION-OK8 KSU & PC8
SECTION 100-816-204
MARCH 1993
TO SYSTEM FRAME
GROUND BAR
r
/
1
II
r'
I'
\
II
II
I'
ll
11 J2
ll
II co 3/4
=e
ILZZZJ Ll
FG
PAD NOR
Jl
___--____-_----------------------
I
I
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f.
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j i r :
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c*i\-:, -t*=s,i ‘,
:
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w-m--- ;,;,‘~,,,:,;L,,‘,;,,,.,,,r
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I,,,,,,,,,,,,,,,,--,-------------~
FIGURE 4-8
QCDU CONTROLS AND INTERFACE CONNECTORS
7.02 The QCDU is shown in Figure 4-8.
7.10 QCDU Configuration
7.20 QCDU Installation Procedure
7.21 Install the QCDU in accordance with the
7.11 The QCDU may have to be configured to
control excessive loudness if the system is close to
a CO or installed behind a PBX telephone system.
following steps (Figure 4-7):
1) Remove the PCB from its protective packag-
ina.
It does not have to be configured for anything else.
The decibel (db) PAD switch,
SW101
controls the
loudness by providing a 3 db signal level drop to, or
from, the PBX or CO when set to the PAD position.
2) If the system is located within one mile of the
CO or PBX telephone system, set db
PAD
switch
SW101
to the PAD position.
The switch comes from the factory set at NOR (for
normal) meaning no PAD loss.
3) Make sure that the power supply switch is
OFF.
4-11