3-46 Chapter3
Functional Testing
Tracking Generator Level Flatness: HP E4401B and E4411B, Options 1DN
and 1DQ
Tracking Generator Level Flatness:
HP E4401B and E4411B, Options 1DN and 1DQ
Test Limits
Test Description
A calibrated power sensor is connected to the tracking generator output
to measure the power level at 50 MHz. The power meter is set for REL
mode so that future power level readings are in dB relative to the power
level at 50 MHz.
The tracking generator is then stepped to several frequencies
throughout its range. The output power difference relative to the power
level at 50 MHz is measured at each frequency and recorded.
Analyzers with 75 Ω tracking generators are only tested from 1 MHz to
1500 MHz.
Required Equipment
Minimum Maximum
Flatness ≤ 10 MHz, 50 Ω –2.5 dB 2.5 dB
Flatness > 10 MHz, 50 Ω –2.0 dB 2.0 dB
Flatness > 10 MHz, 75 Ω –3.0 dB 3.0 dB
Flatness > 10 MHz, 75 Ω –2.5 dB 2.5 dB
Instrument Critical Specifications
(for this test)
Recommended
HP/Agilent Model
Meters
Power Meter 438A or E4418A,
E4419A
RF Power Sensor Frequency Range: 100 kHz to 1.5GHz 8482A
Additional Equipment for 75 Ω Input
75 Ω Power Sensor Frequency Range: 1 MHz to 1.5GHz 8483A
Type-N (f) to BNC
(m), 75 Ω Adapter
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