HP 8590 E-Series, Calibration Manual

Page: 297 / 693

39. Displayed A verage Noise Level, HP 8591EM
1 MHz
10. Press the following EMC analyzer keys:
4 FREQUENCY 5 1 4 MHz 5
4
SGL SWP
5
W ait for the completion of a new sweep .
11. Press the following EMC analyzer keys:
4 DISPLA Y 5
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DSP LINE ON OFF (ON)
A djust the display line so that it is centered on the average trace noise ,
ignoring any residual responses (refer to the Residual Responses verication
test for any suspect residuals).
12. Record the display line amplitude setting as TR Entry 2 of the performance
verication test record as the noise level at 1 MHz. The average noise level
should be less than the specied limit.
1 MHz to 1.5 GHz
13. Press the following EMC analyzer keys:
4
FREQUENCY
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
START FREQ 1 4
MHz
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
STOP FREQ 1.5 4
GHz
5
4 BW 5 1 4 MHz 5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
AVG BW AUTO MAN (MAN) 10 4 kHz 5
4
SWEEP/TRIG
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SWEEP CONT SGL (CONT)
If the IF overload message is displayed on the EMC analyzer , performing the
next step should clear the message .
14. Press 4 FREQUENCY 5 and adjust the center frequency setting, if necessary , to
place the LO feedthrough just o-screen to the left.
15. Press the following EMC analyzer keys:
4 SGL SWP 5
4
TRACE
5
N NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
CLEAR WRITE A
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
More 1 of 4
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
More 2 of 4
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
VID AVG ON OFF (ON) 10 4 Hz 5
W ait until AVG 10 is displayed to the left of the graticule (the EMC analyzer
will take ten sweeps , then stop).
2-268 P erformance V erication T ests