HP 8753D Option 011 Service Manual page 248

System Verification Tests
These tests apply mainly to system-level, error-corrected veri cation and troubleshooting.
Tests 27 to 31 are associated with the system veri cation procedure, documented in the
\ ystem Veri cation and Performance Tests" chapter. Tests 32 to 43 facilitate examining the
calibration coecient arrays (error terms) resulting from a measurement calibration; refer to
the \Error Terms" chapter for details.
27 Recalls the initialization state for system veri cation from disk, in
Sys Ver Init.
preparation for a measurement calibration. It must be done before 28, 29, 30 or 31
are performed.
28 Recalls veri cation limits from disk for veri cation device #1 in all
Ver Dev .
applicable -parameter measurements. It performs pass/fail limit testing of the
current measurement.
29 ame as 27 above for device #2.
Ver Dev 2.
30 ame as 27 above for device #3.
Ver Dev 3.
31 ame as 27 above for device #4.
Ver Dev 4.
32-43
Cal Coef - 2.
display memory. A measurement calibration must be complete and active. The
de nition of calibration arrays depends on the current calibration type. After
execution, the memory is automatically displayed. Refer to the \Error Term" chapter
for details.
Adjustment Tests
The tests without asterisks are used in the procedures located in the \Adjustments" chapter
of this manual, except as noted.
44 Writes default correction constants for rudimentary source power
*Source Def.
accuracy. Use this test before running test 47, below.
45
*Pretune Def.
pretuning accuracy. Use this test before running test 48, below.
46 Measures three xed voltages on the ABU , and generates new
ABUS Cor.
correction constants for ABU amplitude accuracy in both high resolution and low
resolution modes. Use this test before running test 48, below.
47 Measures source output power accuracy, atness, and linearity against
Source Cor.
an external power meter via HP-IB to generate new correction constants. Run tests
44, 45, 46, and 48 rst.
48 Generates source pretune values for proper phase-locked loop
Pretune Cor.
operation. Run tests 44, 45, and 46 rst.
49
Intensity Cor.
for recall of display intensity values at power-on.
50 Not used in \Adjustments." Writes the \secondary test pattern" to the
Disp 2 Ex.
display for adjustments. Press PRESET
51 Measures the gain of the IF ampli ers (A and B only) located on the
IF Step Cor.
A10 digital IF, to determine the correction constants for absolute amplitude accuracy.
RAFT
3/21/106 15:14
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Copies error term data from a measurement calibration array to
Writes default correction constants for rudimentary phase lock
tores the current values of the intensity adjustments, under DISPLAY
5
to exit this routine.
Service Key Menus and Error Messages 10-9
,
5