Agilent Technologies 8590 Series Service Manual page 260

Troubleshooting the IF Section
IF Power-Level Measurement
To check bandwidth control lines for the A11/A13
bandwidth filter assemblies
Table 5-1
and A13 bandwidth filter assemblies from the A7 analog interface
assembly. A calibrated analyzer produces control voltages similar to the
values in
default calibration data was in use.)
• Use the difference in control voltage between bandwidths from the
• Use an extender board to measure the bandwidth control voltages at
• Refer to
Table 5-1 Nominal Resolution Bandwidth Control Line Voltages
3 dB
6 dB EMI
260
provides nominal bandwidth control voltages sent to the A11
Table 5-1. (The values in
table as a guide for normal bandwidth operation.
the motherboard connector for the A7 assembly or the A11/A13 filter
assemblies.
"Troubleshooting the A15 Motherboard Assembly"
location of the control lines for each assembly.
Resolution
Bandwidth
5 MHz
3 MHz
1 MHz
0.3 MHz
0.1 MHz
30 kHz
10 kHz
3 kHz
1 kHz
0.3 kHz
9 kHz
120 kHz
Table 5-1
BW5 BW6
−9.90
+14.0
−9.90
+14.0
−9.90
+14.0
−9.90
+14.0
−9.90
+14.0
−1.0
+9.25
−1.0
+8.96
−1.0
+8.51
−1.0
+7.50
−1.0
+6.00
−1.0
+8.81
−9.90
+14.0
were measured while
for the
BW7
+4.4
+6.4
+8.5
+9.4
+9.7
+9.7
+9.7
+9.7
+9.7
+9.7
+9.7
+9.6
Chapter 5