Specifications

Chapter 10 293
Block Diagrams
RF Analyzer Section
Figure 10-6 Spectrum Analyzer Assembly, A2A20
+2
SYNTH
20 MHz
OUT OF LOCK
CYCLE SLIP
RUN
3
CONTROL
IO
CAL
EN
BW
GAIN
DAC
VARIABLE
GAIN
TUNE
TUNE
TUNE
DACS (3)
-8 dB +8 dB
3
LOG
AMP
BW
GAIN
(TO SCOPE)
11.26 MHz
1 MHz BW
20 dB
GAIN
PAD
114.3 MHz
BPF
TC
110 MHz
16/17
LOOP
BW
500Hz
CAL
EN
PAD
X
CAL
EN
+7 dBm
BW
GAIN
O, 10,
20 dB
TEMP
COMP
BW
-8 dB +8 dB
VARIABLE
GAIN
TUNE
0, 5, 10 dB
TEMP COMP
GAIN
GROUP
SERIAL IO
A
SMB
MOTHERBOARDP/O A2A1
+12.4
+5.1
-12.4
GND
(TO MEAS
BOARD)
NC
SA_SCP2
SA_SCP3
A A
SWEEP
START
SA
FROM
SCOPE
20 MHz FROM
REFERENCE
FROM
RECEIVER