Measurement Computing Personal Daq rev.6.0 - Manual (Page 30)

2-10 General Information & Specifications 878595 Personal Daq User’s Manual
Analog Specifications
Each channel can be individually configured for single ended or differential; volts or thermocouple inputs.
Personal Daq/54: configurable for 10 single-ended, 5 differential; volts or TC channels
Personal Daq/54 does not accept expansion modules .
Personal Daq/55: configurable for 10 single-ended, 5 differential; volts or TC channels
Personal Daq/56: configurable for 20 single-ended, 10 differential; volts or TC channels
PDQ1 Expansion Module: configurable for 20 single-ended, 10 differential; volts or TC channels
PDQ2 Expansion Module: configurable for 40 single-ended, 20 differential; volts or TC channels
Input Voltage Range Relative to Analog Common (COM): -10 to +20 VDC
Input Voltage Ranges
RMS Noise (µV) typical*
Programmable Voltage Ranges
Very
Slow
Slow Medium
50, 60 Hz
Rejection
Medium Fast Very
Fast
-10 V to +20 V (Single-ended only) 120 120 120 120 270 1600
-20 V to +20 V (Differential only) 120 120 120 120 270 1600
-10 V to +10 V 35 35 35 75 190 740
-5 V to +5 V 7 7 10 60 95 370
-4 V to +4 V 4 4 5 20 60 340
-2.5 V to +2.5 V 4 5 8 55 75 200
-2 V to +2 V 4 4 4 15 30 150
-1.25 V to +1.25 V 2 2 3 9 20 110
-1 V to +1 V 2 2 3 15 20 75
-625 mV to +625 mV 3.5 3.5 4.5 10 15 50
-500 mV to +500 mV 1 1.5 2 15 15 40
-312 mV to +312 mV 3 3 4 8 10 30
-250 mV to +250 mV 1 1 2 8 8 25
-156 mV to +156 mV 2.5 4 4 8 8 20
-125 mV to +125 mV 1 1 1.5 7 7 20
-62 mV to +62 mV 1 1 1.5 6 5 9
-31 mV to +31 mV 1 1 1.5 6 5 7
*Note: Noise measured with continuous self-calibration disabled.
Voltage Specifications (one year, 15 to 35°C)
Accuracy:
Personal Daq/54: 0.015% of reading + .004% of range (exclusive of noise)
Personal Daq/55: 0.01% of reading + .002% of range (exclusive of noise)
Personal Daq/56: 0.01% of reading + .002% of range (exclusive of noise)
Input Offset Voltage:
Personal Daq/54: <30µV (differential or single-ended)
Personal Daq/54: <20µV (differential or single-ended)
Personal Daq/54: <20µV (differential or single-ended)
Peak-to-Peak Noise: 6 x RMS Noise
Temperature Coefficient: (5 ppm + 1 µV)/°C
Input Resistance: 10M Ω (single ended); 20MΩ (differential); ±5%
Bias Current: <1 nA (0 to 35°C)
DC Common Mode Gain Error: <100 ppm typical; <2 ppm/°C common mode gain drift typical
AC Common Mode Rejection: >120 dB @ 50 Hz (610 ms, 370 ms, 130 ms measurement durations);
>120 dB @ 60 Hz (610 ms, 310 ms, 110 ms measurement durations)
AC Normal Mode Rejection: >80 dB @ 50 Hz (610 ms, 370 ms, 130 ms measurement durations);
>80 dB @ 60 Hz (610 ms, 310 ms, 110 ms measurement durations)
Channel-to-Channel Cross Talk: < -110 dB (DC to 100 Hz; up to 10 k
Ω source resistance)
Over-Voltage Protection: ±45 V relative to analog common