Measurement Computing Personal Daq/3000 Series - Manual (Page 68)

7-2 Specifications 937492 Note : Specifications are subject to change without notice.
Analog Inputs
Channels
: 16 single-ended or 8 differential. Programmable on a
per-channel basis as single-ended or differential.
Expansion
: An additional 48 analog inputs per module via optional PDQ30 module.
Expansion channel features are identical to those of the main channels.
Expansion Connector
: 25-pin DSUB, female
Over-Voltage Protection
: ±30V without damage
Voltage Measurement Speed
: 1 µs per channel
Ranges
: Software or sequencer selectable on a per-channel basis.
±10V, ±5V, ±2V, ±1V, ±0.5V, ±0.2V, ±0.1V
Input Impedance
: 10MΩ single-ended; 20MΩ differential
Total Harmonic Distortion
: -80 dB, typical for ±10V range, 1 kHz fundamental
Signal to Noise and Distortion
: 72 dB, typical for ±10V range, 1 kHz fundamental
Bias Current
: 40 pA typical (0°C to 35°C)
Crosstalk
: -75 dB DC to 60 Hz; -65 dB @10 kHz, typical
Common Mode Rejection
: -70 dB typical DC to 1 kHz
Maximum Usable Input Voltage
+ Common Mode Voltage
Ranges Maximum
(CMV + V
in
)
5, 10V 10.5V
0.1, 0.2, 0.5, 1, 2V 6.0V
Voltage Measurement Noise vs. Oversampling
0.01
0.10
1.00
10.00
100.00
1 10 100 1000 10000 100000
Oversampling Rate
Nois
e
(
R
M
S
C
oun
ts
),
Ty
p
ic
a
l
100mV
10V
2V
1V
500mV
200mV
Range
Note: does not include noise due to quantizing of returned data