
315
Item Description
microTCD Adjustments in the active method.
Current Displays, in mA, the actual microTCD current.
Balance Pct
Displays, in %, the microTCD bridge balance. On the 3800
GC, the bridge is balanced automatically and should normally
set around 0%. A large offset in bridge balance (+ or -) could
indicate a potential problem.
Polarity
positive or negative
Displays the microTCD Polarity initial condition setting or
time-programmed setting in the active method.
Detector Signal Displays, in mV, the actual microTCD detector signal at the
3800 GC.
Bunch Size Displays the data acquisition bunch size.
Freq Displays the data acquisition bunch rate, in Hz.
FID Status:
Item Description
Ready Yes or No.
The FID detector is Ready (Yes) if the setpoints have been
achieved and stabilized. The FID detector is Not Ready
(No) if readiness to start a run has not been achieved or if,
during a run, the FID detector becomes not ready or goes
“out of tolerance”. Some reasons the GC may go Not
Ready during a run are: the temperature program is too
aggressive, the oven door is opened, the coolant runs out,
the power line voltage drops, etc.
Fault Yes or No.
Displays if a fault in the FID detector component has
occurred.
FID Electronics On or Off
Displays the FID Electronics setting in the active method.
Range 9, 10, 11, or 12
Displays the FID Range initial condition setting or the time-
programmed setting in the active method.
Time Const Fast (50 msec) or Slow (200 msec)
Displays the electrometer time constant setting from the
FID Adjustments in the active method.
Detector Signal Displays, in mV, the actual FID detector signal at the 3800
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