Wavetek 188 Manual page 33

Table 6-10. Trigger Logic (Continued)
Indication: Generator trigger and gate mode problems.
Check
Corrective Procedure
10.
12:
13.
15:
16.
ШЕ
Check 09 pin 1 for a TTL Май.
Check 010 pin 10 for a TTL high.
Check U10 pin 9 for TTL low.
Check anode CR6 for approximately - 1.5V.
Check cathode CR6 for approximately — 0.7У.
Check emitter Q11 for 0 Мас +100 mV.
‫ك‬
R81, R112 adjustments.
MUS:
. R73, - 5М supply.
09.
. 010.
. 010.
. 08.
. СВ15, Од, В78.
. CR6.
05.
96.
. R81 adjustment.
. Q9 - Q11 circuitry.
. Е25, E26!
. СВ13, СВ14.
. Џ9, SW10.
. 99, SW10.
2229:
а. U10 or clock signal to 010
from 07.
р. C29 (pulse too narrow).