Models 947, 948 and 960 Leak Detectors Operations and Service Manual
A-6
NOTE
System TC being at atmosphere is not a normal state for the leak
detector. The turbo pump must be turned off, and the
spectrometer tube must be vented by operating the valves or by
opening the vent screw on the turbo pump. This is best done
before the pump gets up to speed just after turning the leak
detector on.
CAUTION
You must take care to avoid damage to the vacuum system and
the spectrometer tube. Follow instructions carefully.
[SHIFT]
INIT
GAIN
PUT
Sets a permanent new value for System Gain. Enter X.X
(the desired value), followed by the SHIFT key, then the
function key.
INIT
EMIS
PUT
Sets a temporary new value for Emission Current. Enter XXXX
(the desired value), then the function key.
[SHIFT]
INIT
EMIS
PUT
Sets a permanent new value for Emission Current. Enter XXXX
(the desired value), followed by the SHIFT key, then the
function key.
ZERO
TP TC
ATM
Initiates an atmosphere calibration of the Test Port TC.
[SHIFT]
ZERO
TP TC
ATM
Initiates a zero calibration of the Test Port TC.
ZERO
SY TC
ATM
Initiates an atmosphere calibration of the System TC.
[SHIFT]
ZERO
SY TC
ATM
Initiates a zero calibration of the System TC.
SET
TST TM
SHOW
Displays the value of the Auto Sequencer Test Time.
Summary of Contents for 948
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