Digidata 1550B Low-Noise Data Acquisition System User Start Guide
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Analog Inputs
Item
Description
Number of channels
8
1
Type of channels
single
‐
ended
Resolution
16
‐
bit, 1 in 65536
Sample rates per channel
1 Hz to 500 kHz
Input range
‐
10.000 V to +10.000 V
Input resistance (DC)
> 1 M
Ω
Gain value
1
Digitization noise
< ±1 mV Avg (p
‐
p)
Crosstalk noise
< ±1 mV Avg (p
‐
p)
Table 6-2: Analog Inputs Specifications
1. Depending on the model, Analog Input Channels #0 #2, #4, and #6 are configurable with the
HumSilencer system.
Analog Outputs
Item
Description
Number of channels
8
Resolution
16
‐
bit
Sample rates per channel
1 Hz to 500 kHz
Output range
–10.000 V to +10.000 V
Output impedance (DC)
< 0.5
Ω
Output short circuit to signal ground
±25 mA
Table 6-3: Analog Outputs Specifications
Digital Inputs
Item
Description
Input type
5 V nominal, >4 V high threshold
START trigger
rising
‐
edge sensitive
TAG trigger
rising
‐
edge sensitive
Table 6-4: Digital Inputs Specifications
