Daily Checks (Executing The Self-Test); Internal Test; External Test - Agilent Technologies 4288A Programming Manual

Avoiding Mistakes Related to Work and Daily Checks

Daily Checks (executing the self-test)

Daily Checks (executing the self-test)
The 4288A has a self-test function that consists of an internal test and an external test.

Internal test

To execute the internal test, use the following command.
•
When you execute the above command, one of the error codes shown in Table 8-1 may be
displayed after the completion of the test.
NOTE If the instrument has passed all of the tests, 0 is read out. If several errors are detected
simultaneously, the sum of their error numbers is read out.
Table 8-1 Self-test items

External test

To execute the external test, use the following command.
•
NOTE
Before executing the command, connect the 42090A to the UNKNOWN terminal of the
4288A (or directly connect between L
BNC cables).
98
*TST? on page 129
Test item
Checks that the data bus of RAM is connected properly and
RAM
there is no faulty memory cell.
Boot ROM Checks that the checksum of the boot ROM is correct.
Flash ROM Checks that the checksum of the flash ROM is correct.
Checks that the checksum of the calibration data (factory
Calibration data
calibration data) in EEPROM is correct.
Checks that the checksum of the compensation data in
Compensation data EEPROM is correct. Even if the test fails, the compensation
data is not initialized.
A/D converter Checks that the A/D converter operates properly.
Checks that the instrument setup values in backup memory
Backup RAM (RAM) are proper. Even if the test fails, the instrument setup
values are not initialized.
:SYST:TEST? on page 194
Description of test
and L and between H
CUR POT
Error
code
1
2
4
8
16
32
64
and H with
CUR POT
Chapter 8