Maximum Frequency Verification (Analog Bandwidth); Table 1-5 Test Record For Dc Gain Verification - Keysight 8990B Service Manual

1 Performance Verification and Adjustments
Table 1-5 Test record for DC gain verification (continued)
Output
Vertical scale
vol tage
Video input channel 3 (50 Ω)
10 mV/div ±30 mV
20 mV/div ±60 mV
50 mV/div ±150 mV
100 mV/div ±300 mV
200 mV/div ±600 mV
500 mV/div ±1.5 V
1 V/div ±3.0 V
Video input channel 3 (1 MΩ)
10 mV/div ±30 mV
20 mV/div ±60 mV
50 mV/div ±150 mV
100 mV/div ±300 mV
200 mV/div ±600 mV
500 mV/div ±1.5 V
1 V/div ±3.0 V
2 V/div ±6.0 V
5 V/div ±15.0 V

Maximum frequency verification (analog bandwidth)

The AC gain of the peak power analyzer decreases at frequencies nearing the
upper end of the usable frequency range. The maximum frequency verification
ensures that at a specified frequency, the drop in the AC gain is 3 dB or less.
Required test equipment:
– 1 unit of E8257D Option 520 signal generator
– 1 unit of 11667A power splitter
46
V V
DMM+ DMM–
V V
scope+ scope–
Keysight 8990B Service Guide
DC gain error
DC gain error
limit
±2%
±2%
±2%
±2%
±2%
±2%
±2%
±2%
±2%
±2%
±2%
±2%
±2%
±2%
±2%
±2%