Agilent Technologies 8753ES Option 011 Service Manual page 302

Service Key Menus and Error Messages
Service Key Menus
Adjustment Tests These tests (except as noted) are used in the procedures located in
Chapter 3 , "Adjustments and Correction Constants."
Table 10-8 Adjustment Tests
Test Test Name
Number
44 Source Def
45 Pretune Def
46 ABUS Cor
47 Source Cor
48 Pretune Cor
50 a
Disp 2 Ex
51 IF Step Cor
52 ADC Ofs Cor
53 Sampler Cor
54 Cav Osc Cor
55 Serial Cor
56 Option Cor
57
58 Init
EEPROM
a. Not used in the adjustment procedures.
10-12
Writes default correction constants for rudimentary source power accuracy. Use
this test before running test 47, below.
Writes default correction constants for rudimentary phase lock pretuning
accuracy. Use this test before running test 48, below.
Measures three fixed voltages on the ABUS, and generates new correction
constants for ABUS amplitude accuracy in both high resolution and low
resolution modes. Use this test before running test 48, below.
Measures source output power accuracy, flatness, and linearity against an
external power meter via GPIB to generate new correction constants. Run tests
44, 45, 46, and 48 first.
Generates source pretune values for proper phase-locked loop operation. Run
tests 44, 45, and 46 first.
Writes the "secondary test pattern" to the display for adjustments. Press
Preset
to exit this routine.
Measures the gain of the IF amplifiers (A and B only) located on the A10 digital
IF, to determine the correction constants for absolute amplitude accuracy. It
provides smooth dynamic accuracy and absolute amplitude accuracy in the −30
dBm input power region.
Measures the A10 Digital IF ADC linearity characteristics, using an internal
ramp generator, and stores values for the optimal operating region. During
measurement, IF signals are centered in the optimal region to improve
low-level dynamic accuracy.
Measures the absolute amplitude response of the R sampler against an external
power meter via GPIB, then compares A and B, (magnitude and phase), against
R. It improves the R input accuracy and A/B/R tracking.
Calculates the frequency of the cavity oscillator and the instrument
temperature for effective spur avoidance.
Stores the serial number (input by the user in the Display Title menu) in
EEPROM. This routine will not overwrite an existing serial number.
Stores the option keyword (required for Option 002, 006, 010 or any
combination).
Not used
This test initializes certain EEPROM addresses to zeros and resets the display
intensity correction constants to the default values. Also, the test will not alter
the serial number and correction constants for Option 002, 006, and 010.
Description
Chapter 10