INFICON UHV Bakeable Sensor - Manual (Page 48)

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UHV Bakeable Sensor Operating Manual
5.1.2 Diagnostic Tools
The following diagnostic tools can be used to determine if a crystal fail condition is
due to the UHV Bakeable Sensor or the instrument the sensor is used with:
 PN 782-902-023 oscillator with 5.5 MHz test crystal (see section 5.1.2.1 ).
 OSC-100 oscillator test function (see section 5.1.2.2 ).
 PN 760-601-G2 Crystal Sensor Emulator (see section 5.1.2.3 ).
 XIU test function (see section 5.1.2.4 ).
5.1.2.1 PN 782-902-023 Oscillator with 5.5 MHz Test Crystal
1 Disconnect the short BNC cable from the BNC connector on the bakeable
sensor feedthrough.
2 Connect the 5.5 MHz test crystal (included with oscillator) to the short BNC
cable connected to the oscillator.
 If the crystal fail disappears within 5 seconds, the bakeable sensor is the
cause of the crystal fail.
 If the crystal fail is still present after 5 seconds, the controller or monitor, the
oscillator, or a cable is the cause of the crystal fail. Refer to the controller or
monitor operating manual.
5.1.2.2 OSC-100 Test Function
1 Disconnect the short BNC cable from the BNC connector on the bakeable
sensor feedthrough.
2 Depress the test button on the OSC-100 oscillator.
 If the crystal fail disappears within 5 seconds with the button depressed, the
bakeable sensor or the short BNC cable is the cause of the crystal fail.
 If the crystal fail is still present after 5 seconds with the button depressed,
the controller or monitor, the oscillator, or a cable is the cause of the crystal
fail. Refer to the controller or monitor operating manual.
5.1.2.3 PN 761-601-G2 Crystal Sensor Emulator
1 Disconnect the short BNC cable from the BNC connector on the bakeable
sensor feedthrough.
2 Connect the Crystal Sensor Emulator to the short BNC cable connected to the
XIU or oscillator.
 If the crystal fail disappears within 5 seconds, the bakeable sensor is the
cause of the crystal fail.
 If the crystal fail is still present after 5 seconds, the controller or monitor, the
oscillator or XIU, or a cable is the cause of the crystal fail. Refer to the
controller or monitor operating manual.