INFICON LDS3000 Modular Leak Detector - Manual (Page 38)

38 Operation
252 E
Voltage REF5V
shortened,
(voltage [V])
24 120
+15V or REV5V too low,
short circuit at pre-
amplifier, IF board or MSB
defective
3xx detection system (offset pre-amplifier, pre-amplifier test, emission, cathode test)
300 W
Anode voltage too low,
(anode voltage [V])
41 132
7V <
Nom.
Value
Short circuit anode voltage,
pressure in mass
spectrometer too high, IF
board, MSB or ion source
defective
301 W
Anode voltage too high,
(anode voltage [V])
40 131
7V >
Nom.
Value
MSB defective
302 W
Suppressor voltage too
low,
(suppressor voltage [V])
39 130 297V
Short circuit suppressor, IF
board or MSB defective
303 W
Suppressor voltage too
high,
(suppressor voltage [V])
38 129 363V MSB defective
304 W
Anode cathode voltage
too low,
(anode - cathode
voltage)
36 127 40V
Short circuit anode-
cathode, IF board or MSB
defective
305 W
Anode cathode voltage
too high,
(anode - cathode
voltage)
35 126 140V MSB defective
310 W
Cathode 1 broken,
(actual status)
45 136
Cathode defective, line to
cathode interrupted, IF
board or MSB defective
311 W
Cathode 2 broken,
(actual status)
46 137
Cathode defective, line to
cathode interrupted, IF
board or MSB defective
312 E
Cathode broken,
(actual status)
47 138
Cathode defective, line to
cathode interrupted, IF
board or MSB defective
340 E
Emission error,
(emission current [A])
44 135
<90%
Nom.
value
>110%
Nom.
Value
Emission was stable
previously, pressure
probably too high,
message after 15s
342 W
Cathodes not
connected
47 138
Both cathodes defective
during self-testing or plug
not connected
350 W
Suppressor not
connected
39 130
Suppressor cable during
self-testing not connected
or defective
Error
number
Warning/
Error
Error message
LDS3000
Error
number
LDS1000
protocol
Error
number
ASCII
protocol*
Limit
values
Cause