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Figure
10-2.
A2
Eight
Status
LED
A8
RF
Attenuator
Drive
Circuit
The
A2
post-regulator
has
the
drive
circuit
for
the
A8
RF
attenuator
.
The
circuit
decodes
the
control
signal
from
the
A1
CPU
and
generates
the
following
TTL
signals:
A8
input
attenuator
drive
signals
(5
dB
ON/OFF
,
10
dB
ON/OFF
,
15
dB
ON/OFF
,
20
dB
ON/OFF
,
25
dB
ON/OFF).
These
signals
are
supplied
to
A8
through
the
A20
motherboard.
10-6
Theory
of
Operation
Содержание 4352B
Страница 11: ......
Страница 31: ......
Страница 73: ......
Страница 80: ...Figure 3 4 List Box Menu Adjustments and Correction Constants 3 7 ...
Страница 82: ...Figure 3 6 Reference Frequency Adjustment Location Adjustments and Correction Constants 3 9 ...
Страница 85: ...Figure 3 9 Third IF AMP GAIN Adjustment Location 3 12 Adjustments and Correction Constants ...
Страница 103: ...Figure 4 1 Troubleshooting Organization 4 2 Overall T roubleshooting ...
Страница 113: ......
Страница 130: ...Figure 5 11 Power Supply Block Diagram 1 Power Supply T roubleshooting 5 17 ...
Страница 131: ...Figure 5 12 Power Supply Block Diagram 2 5 18 Power Supply T roubleshooting ...
Страница 132: ...Figure 5 13 Power Supply Block Diagram 3 Power Supply T roubleshooting 5 19 ...
Страница 133: ......
Страница 135: ...Figure 6 1 Digital Control Group Simpli ed Block Diagram 6 2 Digital Control T roubleshooting ...
Страница 146: ...Figure 7 2 Source Group Troubleshooting Flow Source Group T roubleshooting 7 3 ...
Страница 154: ...Figure 8 2 Receiver Group Troubleshooting Flow Receiver Group T roubleshooting 8 3 ...
Страница 198: ...Figure 10 1 Power Supply Functional Group Simpli ed Block Diagram Theory of Operation 10 3 ...
Страница 203: ...Figure 10 3 Digital Control Group Simpli ed Block Diagram 10 8 Theory of Operation ...
Страница 269: ......
Страница 272: ...Figure B 1 Power Cable Supplied Power Requirement B 3 ...
Страница 273: ......
Страница 293: ...Error Messages Numerical Order 0400 Query error 0410 Query INTERRUPTED 0420 Query UNTERMINATED Messages 20 ...