User manual

prevent CEBO-LC from damage. This is also true if CEBO-LC is unpowered.
Settling time
In general, settling time is the time needed for the analog signal to reach a stable state at the ADC input after
a step change occurred. With CEBO-LC such a step change occurs every time when input multiplexers
change from one channel to another. Therefore this time is called interchannel delay time. With increasing
gain settings a higher interchannel delay time may be required. With default interchannel delay times
CEBO-LC meets specifications at all gains for source impedances up to 1 k at the least.
Factory preset interchannel delay times
Gain Interchannel delay time [µs]
1 16
10 28
100 150
1000 500
All CEBO-LC specifications were measured with factory-preset interchannel delay times. Normally, there is
no need to change these settlings. However, it is possible if desired. Find more information on how to achieve
user defined interchannel delay times in chapter Data Acquisition Interchannel Delay.
Noise and Resolution Table
The following table provides typical noise levels measured with CEBO-LC under ideal conditions. Resolution
is calculated based on these levels. If not otherwise noted, measurements were taken with Analog Input 0
connected to GND with a short wire.
Range
[volts]
Peak-To -Peak
Noise
[24 bit counts]
Peak- To-Peak
Res.
[bits]
Noise- Free
Res.
[µV]
RMS Noise
[24 bit counts]
Eff. Res.
[bits]
Eff. Res.
[µV]
±10 942 14,1 1123,3 219,8 16,2 262,0
±1 1252 13,7 149,2 286,0 15,8 34,1
±0,1 6252 11,4 74,5 1448,2 13,5 17,3
±0,01 19484 9,8 23,2 4039,6 12,0 4,8
For Noise-Free Resolution 128 measurements are taken, subtracting the minimum value from the maximum
value.
RMS and Effective data are calculated based on the standard deviation of 128 readings.
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