HP 4395A - Page 36

2. SOURCE LEVEL ACCURACY/FLATNESS TEST (NA)
Description
This test uses a power meter and a power sensor to measure the actual power level of the RF
OUT signal at several frequencies from 10 Hz to 500 MHz when the signal amplitude is set to 0
dBm. The level accuracy is checked at a frequency 50 MHz. The level atness is calculated as
power deviation from the power reading taken at 50 MHz.
Specication
Level accuracy
@23 6 5

C, 50 MHz, 0 dBm output :::: ::::: :::: ::::: :::: ::::: :::: :::: ::::: :::: ::::: : < 6 1.0 dB
Flatness
@23 6 5

C, relative to 50 MHz, 0 dBm output ::::: :::: ::::: :::: ::::: :::: :::: ::::: :::: 6 2.0 dB
Test Equipment
Power Meter ::::: :::: ::::: :::: ::::: :::: ::::: :::: :::: :
HP 436A Opt. 022, HP 437B
, or HP 438A
Power Sensor :::: ::::: :::: ::::: :::: ::::: :::: :::: ::::: :::: ::::: :::: ::::: :::: ::::: :::: :::
HP 8482A
Multimeter :::: :::: ::::: :::: ::::: :::: ::::: :::: ::::: :::: :::: ::::: :::: ::::: :::: ::::: :::: ::
HP 3458A
50  Feedthrough :::: ::::: :::: :::: ::::: :::: ::::: :::: ::::: :::: ::::: :::: ::::: :::: :
PN 04192-61002
BNC cable,61cm :::: ::::: :::: ::::: :::: :::: ::::: :::: ::::: :::: ::::: :::: ::::: :::: ::::
PN 8120-1839
N(m)-BNC(f) adapter :::: ::::: :::: ::::: :::: :::: ::::: :::: ::::: :::: ::::: :::: ::::: ::::
PN 1250-0780
BNC(f)-Dual Banana Plug Adapter ::::: :::: ::::: :::: :::: ::::: :::: ::::: :::: ::::: :::
PN 1251-2277
Procedure
1. Connect the power sensor to the power meter
. Calibrate the power meter for the power
sensor.
2. Connect the test equipment as shown in Figure 2-2.
2-4 Performance Tests