HP 4934A Operating And Calibration Manual page 104

4 Set the Impulse Noise LOW (SET) threshold to 43 dBm.
5
Start the measurement by pressing
START RESET;
the displayed count should
remain at zero.
6 Slowly increase the AC Calibrator output level until the HP 4934A starts
counting; the AC Calibrator level should be less than 3.456 mV.
7
Press
STOP
to stop the low threshold check.
Mid Threshold Check
8
Set the AC Calibrator output level to 2.745 mV.
9
Select the Mid threshold using the HP 4934A Impulse Noise
DISPLAY
key.
10
Press
START RESET
to start the measurement; the displayed count should
remain at zero.
11 Slowly increase the AC Calibrator output level until the HP 4934A starts
counting; the AC Calibrator level should be less than 5.477 mV.
12
Press
STOP
to stop the Mid threshold check.
High Threshold Check
13 Set the AC Calibrator output level to 5.477 mV.
14 Select the HIGH threshold using the HP 4934A Impulse Noise
DISPLAY
key.
15
Press the
START RESET
key; the displayed count should remain at zero.
16 Slowly increase the AC Calibrator output level until the HP 4934A starts
counting; the AC Calibrator level should be less than 6.895 mV.
17
Press
STOP
to stop the high threshold check.
18 Repeat the above procedure for each of the LOW (SET) threshold settings listed
in the following table:
HP 4934A
Settings
Low Check
Mid Check
High Check
Low (SET)
Threshold
Min Max Min
Max Min Max
60 dBm
15.455 mV 19.457 mV
24.495 mV 30.837 mV 38.822 mV 48.874 mV
80 dBm 0.1546 V
0.1946 V
0.2449 V 0.3084 V 0.3882 V 0.4887 V
100 dBm 1.5455 V
1.9457 V 2.4495 V
3.0837 V 3.8822 V 4.8874 V
5-40 Performance Tests