Quantcast Table 6-8.--Operation Procedures for the Link Panel Test Set - Cont'd
 

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Table 6-8.--Operation Procedures for the Link Panel Test Set--Continued
CONTROL OR
NORM
REF
FUNCTION
DESCRIPTION
INDICATOR
Pos
DESIG
--
LINK RESET
DS4
Lamp, red lens cap
Flashes to indicate link is reset
after calling party or last party
release.
--
Indicates muting circuit is oper-
DS14
Lamp, red lens cap
MUTE
ative for ring-on-tip.
--
Indicates 45-second no-dialing
Lamp, red lens cap
DS2
OFF HOOK
timeout in link.
--
Lamp, red lens cap
Indicates power applied to test
POWER
DS1
Indicates dialed stepping in Y
Lamp, red lens cap
DS13
--
RG/BY START
direction has occurred and link
is prepared to extend ringing.
--
DS9
Neon lamp NE2J
Indicates bridged ringing and
RING-R
ringing-on-ring.
--
Indicates ring-on-tip.
DS10
Neon lamp, NE2J
RING-T
--
Indicates automatic and dialed
DS6
Lamp, red lens cap
X STEP
(two lamps)
stepping in X direction.
and
DS11
--
Indicates automatic and dialed
Lamp, red lens cap
DS7
Y STEP
stepping in Y direction.
(two lamps)
and
DS12
been tested. The unit then resets and causes the XY
bench testing the operation of the XY switch. The unit
switch to move to level 2, and the Y direction process
is mounted in a wooden carrying case; the XY switch
is repeated. The sequence is repeated until all 100 lines
to be tested is mounted on the panel of the unit and
have been tested. The process automatically stops if a
plugged into the associated jack. Power for the test set
fault is encountered. Table 6-9 shows the routiner
is from an external 48-volt dc source.
operating procedure.
The purpose of the test set is to provide a way to
XY UNIVERSAL SWITCH TEST SET.-- The
test the stepping magnets of an XY switch under
XY switches and associated links are initially tested
various conditions. The testing conditions are as
in place. This is done by the link cycle push-button
follows:
switch located on the monitor and distribution panel.
This switch causes the linefinder XY switch in each
1. Pulsing tests at the rate of 12 pulses per second
idle link to step to level 0 in the X direction and to
with 34-percent make
overflow in the Y direction. A connector XY switch
may be checked by interchanging it with a linefinder
2. Pulsing tests at the rate of 12 pulses per second
XY switch of the same link. If an XY switch is
with 84-percent make
suspected of being faulty and further testing is
required, the XY universal switch test set is used.
3. Automatic stepping tests controlled by the
interrupter springs of the XY universal switch under test
The XY universal switch test set (fig. 6-44) is an
electrically operated, portable test set designed for
4. Stepping speed tests in the X or Y directions
6-50

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