Waters 2414 - Page 73

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