Pmt Sensor Hardware Calibration - Teledyne 100E Instruction Manual

TROUBLESHOOTING & REPAIR
special tool or gently pry the chip out using a very fine screwdriver. Make sure not
to bend or destroy any of the contacts of the socket.
• Reinstall the new or additional EEPROM chip, making sure the cut-off edge
matches that of the socket. Press the chip symmetrically and straight all the way
in.
• Close the rear panel and turn on power to the machine.

11.6.3. PMT Sensor Hardware Calibration

The sensor module hardware calibration adjusts the slope of the PMT output when the
Instruments slope and offset values are outside of the acceptable range and all other
more obvious causes for this problem have been eliminated.
• Set the instrument reporting range to SNGL (Section 6.5.3)
• Perform a full zero calibration using zero air (Section 7.2, 7.4 or 7.5).
• Let the instrument run for one hour to stabilize the lamp and run a lamp
calibration from the diagnostic menu. This is required to ensure proper scaling of
the NORM PMT value.
• Locate the Preamp board (Figure 3-8).
• Locate the Following Components On the Preamp board (Figure 11-4):
o HVPS coarse adjustment switch (Range 0-9, then A-F)
o HVPS fine adjustment switch (Range 0-9, then A-F)
o Gain adjustment potentiometer (Full scale is 10 turns).
220
Model 100E Instruction Manual
045150102 Rev XB1