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Figure LOAD here.
4. Disconnect the cable and connect a known good load to the RF OU port as shown in
Figure 1-5.
5. Verify that the data trace falls below
Reference Level
his concludes the Operator's Check. However, further con dence can be obtained by
performing the following:
Measure a known lter to verify that its measured response is the same as is expected.
(A 175 MHz lter is supplied with the HP 8711C/12C/13C/14C.) Verify both the frequency
accuracy and noise
oor.
Check broadband response with lter using conversion-loss mode (same as B*/R*).
If the analyzer's frequency accuracy is critical for your application, verify a CW frequency
using a frequency counter. Verify to
Ensure that the analyzer is placed in trigger-hold mode (press
measure frequencies.
If the Analyzer Fails the Operator's Check
First, repeat the operator's check using a di erent cable and load to eliminate these as a
possible cause of failure.
If your analyzer does not meet the criteria in the operator's check, your analyzer may
need servicing. Have a quali ed service technician check the analyzer or contact any
Hewlett-Packard sales or service oce for assistance. Refer to able 9-1, \Hewlett-Packard
Sales and Service Oces" in Chapter 9, \Safety, Warranty, and Assistance," for the nearest
oce.
1-10
Performance T ests
Figure 1-5. Connect the Load
0
30 dB. If the data trace is o the screen, press
+
and the
key until the trace moves up onto the screen.
5
6
.005% accuracy (for example,
6
2500 Hz at 500 MHz).
Trigger Hold
MENU
5
SCALE
5
) to
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