AT&T Bell System Plant Series Alignment Instructions page 5

ISS 1, SECTION 107-302-500
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TABLE A (Cont)
20A Toll Testboard Controls
Distortion
Calibrator
Keys Switches
Panel
DMS
TMR FRR
LEV-OUT
TMS
CHAN
GEN DIST GEN TST
MULT CONT SG
BIAS. HI SEL SPEED CTR MODE
OFF SGL INT
MDM
REAR
DTA NOR
BIAS
KEYS
SUPV SND FRS LO SEND TMR
DLY
TST TMS
DIST+
FRONT
\
KEYS
DLY
DMO SND
SUB DATA
READ
DIST- AGC READ
TEST SETTINGS
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All keys initially normal. Where no setting is indicated, key and switch positions remain the same as prev~ous test.
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Expected Action If
Action
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Results Test Fails
SEND
TMR
Unplug rear termin41
6. SUPV, normal level SUPV
test cord. ·
SUPV
READ
Hold READ key Read -29.2 ±1 dbm on
If 6 fails, troubleshoot
operated ..
TME. CP32.
Plug cord into
GS jack.
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Normalize all keys; unplug LD test cord.
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Turn on KS-19247, I
FRS
List 1, electronic
I Read frequency of Perform all tests 7 to 12.
7. Fl, mark frequency READ 1 95.5 4 MK
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CHK counter.
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1270 ±1 cps.
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Set control to 1 sec.
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8. Fl, space frequency
SP
Read 1070 ±1 cps.
If all fail,
troubleshoot CP33.
Plug rear terminal
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9. F2, space frequency
test cord into
Read 2025 ± 1 cps.
If 7, 8, 9, or 10
GS jack.
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fails, troubleshoot
10. F2, mark frequency
MK
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Read 2225 ± 1 cps. CP31.
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