Meilhaus RedLab 1608FS, User Manual

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RedLab 1608FS User's Guide Functional Details
22
The accuracy plots in Figure 11 are drawn for clarity and are not drawn to scale.
-10V
+ 10V
Input Voltage
0
65535
1.66mV
32768
Output Code
Ideal
Ideal + 1.66mV + 4mV
Ideal -(1.66mV + 4mV)
Ideal -(1.66mV + 4mV)
Ideal
Ideal + 1.66mV + 4mV
Figure 11. Error band plot
Gain queue
The RedLab 1608FS gain queue allows you to set up a different gain setting for each channel. The gain queue
removes the restriction of having a single gain for all channels. This feature creates a gain list which is written
to local memory on the RedLab 1608FS. The gain list is made up of a channel number and range setting. An
example of an eight-element list is shown in the table below.
Sample channel gain queue list
Element Channel Range
0 CH0 BIP10V
1 CH1 BIP5V
2 CH2 BIP10V
3 CH3 BIP1V
4 CH4 BIP2V
5 CH5 BIP10V
6 CH6 BIP1V
7 CH7 BIP5V
Note that the gain queue must contain eight elements that include all eight channels. You must carefully match
the gain to the expected voltage range on the associated channel
— otherwise, an over range condition can
occur. Although this condition does not damage the RedLab 1608FS, it does produce a useless full-scale
reading. It can also introduce a long recovery time due to saturation of the input channel.