350 Chapter 2
Performance Verification Tests
44. Tracking Generator Level Flatness: Agilent E4402B, E4403B, E4404B, E4405B, E4407B,
and E4408B (Option 1DN)
44. Tracking Generator Level Flatness:
Agilent E4402B, E4403B, E4404B, E4405B,
E4407B, and E4408B (Option 1DN)
This test verifies that analyzers with the tracking generator option
1DN meet their tracking generator level flatness specification. In this
test, 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 dB Relative mode so that future power level readings are in dB,
relative to the power level at 50 MHz.
Next, the tracking generator is stepped to several frequencies
throughout its range, and the output power difference relative to the
power level at 50 MHz is measured for each frequency recorded.
For frequencies below 100 kHz, a digital voltmeter and precision 50 Ω
termination are used to measure the power of the tracking generator
output. The DVM is set to read out in dBm using the MATH function
with R value set to 50 Ω. The following equation is used to calculate
dBm:
The DVM readout is corrected by making the readings relative to the
100 kHz reading from the power sensor.
•Option 1DN, 50 Ω tracking generators are tested from 9 kHz to
3000 MHz.
The related adjustment for this performance test is the front panel
Align Now, TG (Ext Cable) under the System, Alignments menu.
Equipment Required
Power meter
Power sensor, 50 Ω
Digital multimeter
Termination, 50 Ω
Cable, BNC
Cable, Type-N (m) (m)
Adapter, Type-N tee, (m) (f) (f)
Adapter, Type-N (m) to BNC (f)
Adapter, BNC (f) to dual banana plug
Procedure