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AT&T Bell System Plant Series Alignment Instructions page 5

Data distortion test equipment
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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
(
All keys initially normal. Where no setting is indicated, key and switch positions remain the same as prev~ous test.
I
Expected
Action If
Action
I
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.
I
Normalize all keys; unplug LD test cord.
I
I
(
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
I
CHK
counter.
I
1270 ±1 cps.
~
Set control to 1 sec.
i
8. Fl, space frequency
SP
Read 1070 ±1 cps.
If
all fail,
troubleshoot CP33.
Plug rear terminal
(
9. F2, space frequency
test cord into
Read 2025 ± 1 cps.
If
7, 8, 9, or 10
GS jack.
I
fails, troubleshoot
10. F2, mark frequency
MK
I
Read 2225 ± 1 cps.
CP31.
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Page
7

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