Fluke NetDAQ 2640A, Service Manual

Page: 169 / 260

Diagnostic Testing and Troubleshooting
Error Detection
5
5-5
Table 5-1. Selftest Error Codes (cont)
Front Panel
Error Codes
RS-232 Query
Error Codes
Error Codes in
hexadecimal
Error Code Description
10 512 0x00000200 Inguard reference balance test failed.
11 1024 0x00000400 Inguard overload detection failed.
12 2048 0x00000800 Inguard open thermocouple detect failed.
13 4096 0x00001000 Communication parameters corrupt.
14 8192 0x00002000 Ethernet address parameter corrupt.
15 16384 0x00004000 RAM constants corrupt.
16 32768 0x00008000 Ethernet chip or RAM failure.
FLASH ROM Parameter Defaults 5-4.
The FLASH ROM (U21 Main Board) parameters are reset to defaults following the first
power-on and following power-cycles after any FLASH ROM parameters are discovered
to be corrupt. These defaults are listed in Table 5-2.
Table 5-2. FLASH ROM Parameter Defaults
Parameter Default
Ethernet Address ff:ff:ff:ff:ff:ff
Calibration Constants All gains are set to 1.0; all offsets are set to 0.0
IP Address 255.255.255.255
Port Number 4369
RS-232 Baud Rate 19200
BCN 1
Line Frequency 60 Hz
Network Type 0 (isolated network)
Background Testing 5-5.
Background testing is performed to ensure that communication, configuration, and
calibration constants do not become corrupt over time. Every 10 seconds, one of the
parameter sets is verified (verifying all parameter sets at once is too CPU intensive). The
following parameter sets are checked:
•
FLASH ROM communication parameters
•
FLASH ROM calibration constants
•
FLASH ROM Ethernet address
•
RAM instrument and channel configuration
•
RAM pre-computed range scaling and calibration constants used in evaluation
•
RAM copy of calibration constants
•
RAM copy of Ethernet address