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Characteristics - Nominal: Single Channel Reading Rates to I/O or Internal Memory
DAQ970A
DAQ970A
Int. memory (100K)
LAN, USB
Single ch ASCII rdgs - DCV, Ohms
5000/s
5000/s
Single ch ASCII rdgs - ACV, ACI
50/s
50/s
Single ch ASCII rdgs - Freq, period
80/s
80/s
Single ch (chg Scale)
> 25/s
> 25/s
Single ch (chg Func)
> 12/s
> 12/s
Characteristics - Nominal: Scanning Measurement Rates to I/O or Internal Memory
Scanning DCV or Ohms channels
900A
450
450
901A
80
80
902A
250
250
902A (INIT, FETCh)
240
240
902A (MEAS)
240
240
902A (scale, alarm)
220
220
902A (Alt channel)
80
80
908A
80
80
Scanning ACV channels
900A
90
90
901A
50
50
902A
90
90
908A
50
50
Scanning temperature - thermistor or TC channels
900A
150
150
901A
50
50
902A
150
150
Scanning digital in TOTALIZER channels
907A (Digital IN)
275
275
907A (Totalizer)
240
240
Characteristics - Nominal: Data out of Memory (FETCh of 50K readings)
Single channel
DAQ970A over USB
DAQ970A over LAN
Readings
55000/s
120000/s
Rdgs (with timestamp)
35000/s
60,000/s
Rdgs (format option ON)
25000/s
50000/s
Characteristics - Measured: Noise performance for DC voltage, DC current, and resistance
Integration time
Digits
1
RMS Noise adder (% of range + fixed base)
2
DC volts
Ohms
DC current
3
100 PLC/1.67 s (2 s)
6.5
0
0
0
10 PLC/167 ms (200 ms)
6.5
0
0
0
1 PLC/16.7 ms (20 ms)
6.5
0.0001 + 0.5 uV
0.0001 + 0.5 mΩ
0.0006 + 0 .02 nA
0.2 PLC/3 ms (3 ms)
6.5
0.0005 + 3 uV
0.0010 +10 mΩ
0.0050 + 5 nA
0.06 PLC/1 ms (1 ms)
6
0.0020 + 3 uV
0.0020 + 10 mΩ
0.0070 + 10 nA
0.02 PLC/400 µs (300 µs)
6
0.0020 + 3 uV
0.0020 + 10 mΩ
0.0070 + 10 nA
1. For DCV on the 10 volt range with zero volts input and auto zero on.
2. RMS noise adder measured with zero volts input and auto zero on.
3. The follow DCI ranges have these additional multipliers: The 10 mA by 5x, the 100 mA by 2x.
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