Model 2110 5½ Digit Multimeter Reference Manual
Section 6: Troubleshooting guide
2110-901-01 Rev. C/August 2013
6-5
Error code
Type Description
603 Front-End MCU does not
respond
ST
The main CPU U1601 attempts to establish serial communications with
the front-end processor U2001. Communication must function in both
directions for this test to pass.
604 A/D noisy test failed
ST
This test configures to the 10 V DC range with the internal 0 V. A 20
ms ADC measurement is performed, and the result is checked against
a limit of 0 V ± 20 μV.
605 N2 calibration parameter
failed:
ST
This error message indicates that N2 calibration parameter is out of
range.
606 N3 calibration parameter
failed:
ST
This error message indicates that N3 calibration parameter is out of
range.
607 Buffer1 offset out of range
ST
This procedure is to test the offset of buffer U507. The result is
checked against a limit of 0 ± 0.1 mV
608 Buffer2 offset out of range
ST
This procedure is to test the offset of buffer U508. The result is
checked against a limit of 0 ± 0.1 mV
609 DC gain x1 failed
ST
This procedure is to test the tolerance of DC gain×1 amplifier. The limit
of gain tolerance is ± 0.005.
610 DC gain x10 failed
ST
This procedure is to test the tolerance of DC gain×10 amplifier. The
limit of gain tolerance is ± 0.05.
611 DC gain x100 failed
ST
This procedure is to test the tolerance of DC gain×100 amplifier. The
limit of gain tolerance is ± 0.5.
612 Ohms 500 nA source failed
ST
This test configures to the 10 V DC range with the internal 10 M 100:1
divider R204 connected across the input. The 500 nA ohms current
source is connected to produce a nominal 5 V signal. A 20 ms A DC
measurement is performed, and the result is checked against a limit of
5 V ± 1 V.
613 Ohms 5 uA source failed
ST
This test configures to the 1000 V DC range with the internal 10 M
100:1 divider R204 connected across the input. The 5 μA ohms current
source is connected. The compliance limit of the current source is
measured. A 20 ms A DC measurement is performed, and the result is
checked against a limit of 0.12 V ± 0.01 V.
614 DC 1000V zero failed
ST
This test configures to the 1000 V DC range with no input applied. A
20 ms A DC measurement is performed, and the result is checked
against a limit of 0V ± 5 mV.
615 Ohms 10 uA source failed
ST
This test configures to the 1000 V DC range with the internal 10 M
100:1 divider R204 connected across the input. The 10
μA ohms
current source is connected. The compliance limit of the current source
is measured. A 20 ms A DC measurement is performed, and the result
is checked against a limit of 0.12 V ± 0.01 V.
616 DC current sense failed
ST
This test configures to the 3 A DC range. A 20 ms A DC measurement
is performed, and the result is checked against a limit of 0 A ± 5 A. This
test confirms that the DC current sense path is functional. The test limit
is set wide because K303 does not open the current input during self-
test. This test should catch a DC current sense failure without causing
false failures when current inputs are applied during self-test.
617 Ohms 100 uA source failed
ST
This test configures to the 1000 V DC range with the internal 10 M
100:1 divider R204 connected across the input. The 100
μA ohms
current source is connected. The compliance limit of the current source
is measured. A 20 ms A DC measurement is performed, and the result
is checked against a limit of 0.12 V ± 0.01 V.
618 DC high voltage attenuator
failed
ST
This test configures to the 1000 V DC range. The 500 nA ohms current
source is connected to produce a nominal 5 V signal. A 20 ms A DC
measurement is performed, and the result is checked against a limit of
5 V ± 1 V.
