User`s guide

User’s and Service Guide 17
87050A Option K24 System Setup
Performance Verification
For information on how to control the test set, refer to “Operation” on page 18.
The following performance verification is designed to provide you with a high degree of
confidence that your test set is working properly. It is not designed to verify specifications.
To verify specifications, refer to “Performance Tests” on page 30.
Equipment Required
• Network Analyzer, 50 Ω impedance (Agilent 8720D)
• Cable, 50 Ω 3.5 mm (85131-60012 or equivalent)
• Calibration Kit, 50 Ω (Agilent 85052B)
Procedure
This procedure is for performing a simple performance verification using a network
analyzer of the proper frequency range and impedance.
NOTE This is an 80% confidence test only. A unit could pass this simple test and yet
still not function properly. For more complete testing, see “Performance Tests”
on page 30.
Step 1. Perform a one-port reflection calibration at the end of a 50 Ω cable over a
frequency range of 50 MHz to 20 GHz on the analyzer. Verify the calibration
is active and that a cable terminated with a short displays a return loss of
0 (±0.2 dB).
Step 2. Connect the cable (already connected to the reflection port of the analyzer) to the
reflection port of the 87050A Option K24 Test Set.
Step 3. Measure the return loss of each section of the test set by selecting each port
individually (ports 1 thru 24), using the network analyzer. Terminate each port
being tested with a known good 50 Ω load (greater than –30 dB). The resulting
return loss should be greater than –10 dB (the absolute value should be greater
than 10).