10-10 Chapter 10
Service Key Menus and Error Messages
Service Key Menus
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.
19 ABUS Test Tests analog bus accuracy, by measuring several analog bus reference voltages
(all nodes from the A10 digital IF). This runs only when selected.
20 FN Count Uses the internal counter to count the A14 fractional-N VCO frequency (120 to
240 MHz) and the divided fractional-N frequency (100 kHz). It requires the
100 kHz signal from A12 and the counter gate signal from A10 to pass.
Table 10-6 External Tests
Test
Number
Test Name Description
21 Port 1 Op Chk
Part of
“Step 2. Operator's Check” on page 4-6. The procedure requires the
external connection of a short to PORT 1.
22 Port 2 Op Chk Same as 21, but tests PORT 2 (for 8753ES). A through cable is required for the
8753ET.
23 Fr Pan Seq Tests the front panel knob entry and all A1 front panel keys, 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.
24 Fr Pan Diag Similar to 23 above, but the user rotates the front panel knob or presses the
keys in any order. This test displays the command the instrument received.
25 ADC Hist Factory use only.
26 Source Ex Factory use only.
Table 10-5 Internal Tests
Test
Number
Test Name Description
To Next Page
Loading...
Need help?
General
