DEMULTIPLEXER

T.O. 31W2-2GSC24-2

TM 11-5805-688-14-1

NAVELEX 0967-LP-545-3010

DEMULTIPLEXER row.

Perform the following

procedures when the extender card is required to

monitor signals on a functional card:

1. Set POWER CONTROL switch to OFF.

When probing individual

integrated

circuit

(IC)

2. Remove, from its normal card file position, the

pins, ensure that power

functional card to be extended.

and ground pins are not

inadvertently shorted to

each other or to other

signal pins. See figure 6-

for

typical

pin

The extender card must be

arrangements.

installed properly to prevent

shorting of power signals.

NOTE

Before installing extender

card,

ensure

that

part

Cards are coated with a

number (61864080-009) side

fungus-preventive

of card is facing right-hand

material. Use a sharply

side of multiplexer set, and

pointed probe to ensure

card edge having multiple

penetration of coating.

keying slots is pointing

toward bottom of multiplexer

6. Using typical integrated circuit pin arrangements

set.

shown in figure 6-1 as a reference, carefully probe

desired point on extended card.

3. Insert extender card into card slot from which

functional card was removed.

7. Upon completion of monitoring operations, set

POWER CONTROL switch to OFF and return extender

card to slot 22 and functional card to its normally in-

stalled position.

Ensure that component

6-18. CONTINUITY CHECK. Complete multiplexer

(parts) side of functional

set wiring and cabling data are provided in the circuits

card

plugged

into

diagram manual. When performing continuity checks of

extender card is pointing

the card file wiring plane, it may be necessary to use

extender card assembly P/N 61864080-009, which is

toward right- hand side of

located in slot 22 of the DEMULTIPLEXER row. To use

multiplexer set.

the extender card for this purpose, proceed as follows:

4. Insert functional card into extender card.

1. Set POWER CONTROL switch to OFF.

5. Set POWER CONTROL switch to ON.

2. Remove the functional card located in the slot

associated with the connector to be monitored.

6-19