304 Chapter 15
Functional Tests
Frequency Response (Flatness)
Frequency Response (Flatness)
Test Limits
The frequency response test measures the signal analyzer’s amplitude error as a
function of the tuned frequency. Measurements are made ranging from 50 MHz to
the maximum frequency range of your analyzer. The signal source amplitude is
measured with a power meter to eliminate error due to source flatness. The
measured value is normalized to 50 MHz.
Frequency Range Limit Relative to 50 MHz
20 Hz to 3.0 GHz ±1.5 dB
3.0 GHz to 7.5 GHz ±2.5 dB
Item
Critical Specifications
(for this test)
Recommended
Agilent Model
Adapter, Type N(m) to 3.5
mm(m)
Frequency: 10 MHz to 18 GHz
VSWR: < 1.1:1
1250-1743
Adapter,
3.5 mm(f) to 3.5 mm(f)
Frequency: 10 MHz to 26.5 GHz
VSWR: < 1.1:1
83059B
Cable, 3.5 mm, 1 meter Frequency: 10 MHz to 26.5 GHz
VSWR: < 1.4:1
11500E
Cables, BNC 120 cm Frequency: 10 MHz 10503A
Power Meter Compatible with power sensor E4418B
Power Sensor Frequency Range: 50 MHz to 26.5 GHz 8485A
Power Splitter Frequency Range: 50 MHz to 26.5 GHz
Tracking between ports: < 0.25 dB
11667B
Synthesized Sweeper Frequency Range: 50 MHz to 26 GHz PSG
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