Tektronix 1502C - Page 162

Maintenance
1502C MTDR Service Manual
7–15
CONTINUE
Yes
No
3
No
Yes
Check digital delay
on main board.
Check analog delay
on main board.
Run Calibration
Performance Check.
Leading edge not at
zero, wrong length,
or
with discontinuities.
Check chart recorder
or other extra
function modules.
Check for <
± 4 volts
TP4020 and TP4021
on main board.
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