Analog Data Rates - Agilent Technologies 7890 Series Advanced Operation Manual

7
GC Output Signals
A: Range = 0

Analog data rates

230
B: Range = 3
There are limits to usable range settings for some detectors.
The table lists the valid range setpoints by detector.
Table 57 Range limits
Detector
FID
NPD
FPD
TCD
υECD
Analog input
Range may be run time programmed. See
Programming" on page 12 for details.
Your integrator or recorder must be fast enough to process
data coming from the GC. If it cannot keep up with the GC,
the data may be damaged. This usually shows up as
broadened peaks and loss of resolution.
Speed is measured in terms of bandwidth. Your recorder or
integrator should have a bandwidth twice that of the signal
you are measuring.
The GC allows you to operate at two speeds. The faster
speed allows minimum peak widths of 0.004 minutes (8 Hz
bandwidth), while the standard speed allows minimum peak
widths of 0.01 minutes (1.6 Hz bandwidth).
If you use the fast peaks feature, your integrator should
operate at around 15 Hz.
C: Range = 1
Usable range settings (2
0 to 13
0 to 13
0 to 13
0 to 6
0 to 6
0 to 7
Advanced Operation Manual
x
)
"Run Time