Hioki DM7275-01 - Page 153

153
Measurement Specications
Noiserejectionratio
(Voltage measurement)
CMRR:
Signal source resistance: 1 k
Ω
DC CMRR: 140 dB or greater
AC CMRR: 100 dB or greater (±1% of supplied power supply frequency,
integration time of n × PLC setting)
(n: integer value; PLC: power line cycle)
NMRR:
Integration time setting
Powersupply
frequencysetting
±0.1%
Powersupply
frequencysetting
±1%
100PLC 120 dB or greater 100 dB or greater
10PLC 120 dB or greater 100 dB or greater
1PLC 55 dB or greater 35 dB or greater
Less than 1PLC 0 dB 0 dB
(PLC: power line cycle)
Inputbiascurrent(25°C)
(Voltage measurement)
100mVrange,1Vrange:
Max. 30 pA
10Vrange:
Max. 50 pA
100Vrange,1000Vrange:
Max. 10 pA
Common-mode current 10 nA rms (reference value)
Measurement times Voltage measurement:
RUN state: Single measurement time of
T
3
+
T
4
+
T
6
+
T
7
+
T
10
(tolerance of ±10% ±0.2 ms)
Other than RUN state: From trigger input until EOM turns on:
T
2
+
T
3
+
T
4
+
T
5
+
T
7
(tolerance of ±10% ±0.2 ms)
For an explanation of
T
0
to
T
10
, see “Separate table” (p. 153).
Temperature measurement:
200 ±20 ms (measured value update timing depends on the voltage
measurement time)
Separate table
Parameter Description Time
T
0
Trigger signal on-time 0.1 ms or greater
T
1
Trigger signal off-time 1 ms or greater
T
2
Trigger detection time 0.1 ms or less
T
3
Contact check time • Off setting: 0 ms
• On setting: Contact check integration time + 2 ms
T
4
Delay time 0 ms to 9999 ms
T
5
Acquision time (other than RUN state) 50 Hz power 60 Hz power
FAST (1PLC) 27.2 ms 23.8 ms
MEDIUM (10PLC) 245 ms 205 ms
SLOW (100PLC) 3.92 s 3.37 s
Integration time other than above: Integration time + 5.3
ms
13
Specications
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