Toshiba DK8, DK 16 manual Qcdu Configuration, Qcdu Installation Procedure

INSTALLATION-DK8 KSU & PCB

SECTION 100-816-204

MARCH 1993

J2

CO 3/4

FG

TO SYSTEM FRAME

GROUND BAR

PAD NOR

J1

FIGURE 4-8

QCDU CONTROLS AND INTERFACE CONNECTORS

7.02The QCDU is shown in Figure 4-8.

7.10QCDU Configuration

7.11The 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. 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. The switch comes from the factory set at NOR (for normal) meaning no PAD loss.

7.20QCDU Installation Procedure

7.21Install the QCDU in accordance with the following steps (Figure 4-7):

1)Remove the PCB from its protective packag- ing.

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.

3)Make sure that the power supply switch is OFF.

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