Agilent Technologies 8719ET Service Manual page 265

8719ET/20ET/22ET
8719ES/20ES/22ES
RF Network Analyzers
External Tests
These tests require either external equipment and connections or operator interaction of
some kind to run. Tests 30 and 60 are comprehensive front panel checks, more complete
than test 12, that checks the front panel keys and knob entry.
21 Op Ck Port 1− Part of
procedure requires the external connection of a short to PORT 1.
Op Ck Port 2 − Same as 21, but tests PORT 2.
22
Fr Pan Seq − Tests the front panel knob entry and all A1 front panel keys,
23
as well as the front panel microprocessor on the A2 assembly. It prompts
the user to rotate the front panel knob, then press each key in an ordered
sequence. It continues to the next prompt only if the current prompt is
correctly satisfied.
Fr Pan Diag − Similar to 23 above, but your rotate the front panel knob or
24
presses the keys in any order. This test displays the command the
instrument received.
ADC Hist − Factory use only.
25
System Verification Tests
These tests apply mainly to system-level, error-corrected verification and troubleshooting.
Tests 26 to 30 are associated with the system verification procedure, documented in
Chapter 2 , "System Verification and Performance Tests."
examining the calibration coefficient arrays (error terms) resulting from a measurement
calibration; refer to Chapter 11 , "Error Terms."
Sys Ver Init − Recalls the initialization state for system verification from
26
an analyzer verification disk, in preparation for a measurement
calibration. It must be done before service internal tests 27, 28, 29 or 30
are performed.
27 Ver Dev 1− Recalls verification limits from disk for verification device #1
in all applicable S-parameter measurements. It performs pass/fail limit
testing of the current measurement.
Ver Dev 2 − Same as 28 above for device #2.
28
Ver Dev 3 − Same as 28 above for device #3.
29
Ver Dev 4 − Same as 28 above for device #4.
30
Cal Coef 1-12 − Copies error term data from a measurement calibration
31-42
array to display memory. A measurement calibration must be complete
and active. The definition of calibration arrays depends on the current
calibration type. After execution, the memory is automatically displayed.
For details, refer to
Service Guide
"Step 2. Operator's Check" on page
Chapter 11 , "Error Terms."
Service Key Menus and Error Messages
Service Menus - Internal Diagnostics
4-7. The
Tests 31 to 42 facilitate
10- 11