7D14
EFF
SN
B030000-up
ELECTRICAL
PARTS
LIST
AND SCHEMATIC
CORRECTION
Al
HIGH
FREQ
COUNTER
Circuit
Board Assembly
CHANGE
TO:
Add
a
toroid
core
in
series
with
base
lead
of
each
transistor.
Q364
151-0367-00
Silicon
NPN
SKA6516
Q376
151-0367-00
Silicon
NPN
SKA6516
Q384
151-0367-00
Silicon
NPN
SKA6516
Q392
151-0367-00
Silicon
NPN
SKA6516
Q402
151-0367-00
Silicon
NPN
SKA6516
R332
315-0132-00
1.3
kΩ
1/4
W
5%
ADD:
L364
276-0569-00
Core,
toroid ferrite
L376
276-0569-00
Core,
toroid ferrite
L384
276-0569-00
Core,
toroid ferrite
L392
276-0569-00
Core,
toroid ferrite
L402
276-0569-00
Core,
toroid ferrite
PARTIAL
-
FIRST DECADE
COUNTER
M19,
166/872
Summary of Contents for 7D14
Page 4: ...7D14 ...
Page 11: ...Operating Instructions 7D14 Fig 2 1 7D14 front panel controls and connectors 2 2 ...
Page 33: ... 3 13 Fig 3 11 Logic diagram for Zero Cancel Logic stage Circuit Description 7D14 ...
Page 38: ...3 18 Fig 3 16 Time Base and Control circuit detailed block diagram Circuit Description 7D14 ...
Page 44: ...NOTES ...
Page 46: ...NJ Fig 4 1 Electrode configuration for semiconductors in this instrument I ...
Page 68: ...NOTES ...
Page 96: ... 7DI 4 DIGITAL COUNTER UNIT ...
Page 98: ...GRS 0371 BLOCK DIAGRAM ...
Page 99: ......
Page 103: ...0 0 I 200 mV 500 µs 0 001 200 mV 500 µs 0 001 MHz 00 mV E 00 µs 0 001 MHz ...
Page 106: ...1 ...
Page 110: ...A2 Logic Circuit Board Assembly jQ798i 798 jc743 CR744t uni R724 R742 JL744S FrR796 ...
Page 113: ......
Page 114: ...P 0 A2 LOGIC BOARD ...
Page 121: ... A B D t F H J NPR Tj ZWX V A AC M AEA HUM qAZ DEF HJ N P R S T J V V7X y ABM APAI AA 7DI4 ...
Page 129: ......
Page 130: ...4 7D14 DIGITAL COUNTER ...