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6
6-5
Table 6-1. Power-Up Error Codes
Error Description
1 ROM checksum error
2 External RAM test failed
3 Internal RAM test failed
4 Display power-up test failure
5 Display not responding
6 Instrument configuration corrupted
7 EEPROM instrument configuration corrupted
8 EEPROM calibration data corrupted
9 A/D not responding
A A/D ROM test failure
b A/D RAM test failure
C A/D self test failure
Each of the measurements listed in the following steps assume the instrument is being
tested after a 1/2 hour warm up, in an environment with an ambient temperature of 18 to
28 degrees C, and a relative humidity of less than 70%.
Note
All measurements listed in the performance test tables are made in the slow
reading rate unless otherwise noted.
Warning
The 2620A/2625A instrument contains high voltages that can be
dangerous or fatal. Only qualified personnel should attempt to
service the instrument. Turn off the Hydra Series II and remove
all power sources before performing the following procedures.