June 11, 2015, 715004754 Rev. A
Page 73
•
Filter type - Selected via the front panel, timed event, or remote interface of
either Hamming or RC filter type. The filter type defaults to Hamming in RIU
mode and RC in 410 mode.
•
Time constant - Set via the front panel, timed event, or remote interface.
Adjusts the noise filter (time constant) to achieve the optimum signal-to-noise
ratio without changing the sensitivity setting. The settable range of the
Hamming filter is 0.1 to 5.0 seconds in 0.1-second increments (default is 1.0
second). For the RC filter, the range is 0.1 to 10.0 seconds in 0.1-second
increments.
•
Voltage offset - Adjusts the charted analog output signal. Entered in mV, voltage
offset adjusts the 2-V signal by the entered value (0- to 2000-mV range). This is
useful for making minor adjustments, and for nulling any offset between the
2414 RI detector and a connected external data system.
•
µRIU offset - Provides an offset for adjusting the detector output. The default is
0.0 µRIU and the range is ±500.0 µRIU.
•
Enable keypad autozero - Selected by default, this parameter results in an
autozero each time an autozero is requested via the front panel. You can disable
this parameter by pressing any numerical key to deselect this box.
•
Enable keypad chart mark - Selected by default, this parameter results in a
chart mark each time a chart mark is requested via the front panel. You can
disable this parameter by pressing any numerical key to deselect this box.
•
Enable keypad purge - Selected by default, this parameter results in a purge
each time one is requested via the front panel. You can disable this parameter
by pressing any numerical key to clear this box.
•
Enable keypad recycle - Selected by default, this parameter results in a recycle
each time one is requested via the front panel. You can disable this parameter
by pressing any numerical key to clear this box.
•
Autozero on inject - Selected by default, this parameter results in an autozero
each time an inject start signal is received by the detector via contact closure,
IEEE-488, or the front panel. You can disable this parameter by pressing any
numerical key to deselect this box.
Table 5–3:
410 mode and RIU mode conversion factors and
equivalencies
Sensitivity
Factor nRIU/mV
Equivalent µRIU-FS
1
5000.000
10000
2
2500.000
5000
4
1250.000
2500
8
625.000
1250
16
312.500
625
32
156.250
313
64
78.125
156
128
39.063
78
256
19.531
39
512
9.766
20
1024
4.883
10
Содержание 2414
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