Chapter 2 Operation
Self-test
FINAL PSD90-3 Universal AC/DC Fuel Quantity Test Set Operation Manual 22166183 R001
2 - 22 Subject to Export Control; see Cover Page for details. April 2023
1. Analog to Digital Converter (ADC) Calibration
2. Ohmmeter function test
3. AC CAP functional test
4. CAP simulator functional test
5. Variable frequency functional test.
While the self-test is performed, all segments are briefly shown to allow the user to verify
all of the segments are functioning. Following this, the loaded software version is shown
briefly.
If no failure is found, the test set will show PASS. Otherwise, the test set will show FAIL,
followed by a code. Table 2-1 lists the possible codes.
If the test set failed self-test, it will continually cycle through the failure codes. Operation of
the test set can be continued by pressing twice on the SIMULATOR COARSE switch, or
by sending a remote command through the RS-232 interface.
Table 2-1 Self-Test Fail codes
Code Description
SPI1 SPI1 Bus comm failure
SPI2 SPI2 Bus comm failure
CRC Missing or corrupted calibration data
ADC1 ADC1 failed functional test
ADC2 ADC2 failed functional test
ADC3 ADC3 failed functional test
REF Internal Reference capacitor failed
CAP AC CAP failed functional test
SLOP Microbe Slope detector failed functional test
SCAP Simulator failed functional test
RES Ohmmeter failed functional test
OPT Missing or corrupted options
1
1. This error code is also displayed if the operator selects a function for an option that is not installed.
UREF Variable frequency failed capacitive functional test
URES Variable frequency failed resistive functional test
PLL Phase-Lock-Loop failure
To Next Page