MR8740、MR8741_user_manual_eng_20191016H.pdf - 第373页

17.6 Specifications of Modules 361 Chapter 17 S pecifications 16 17 17.6.9 MR8990 Digit al V oltmeter Unit Temperature and humidity range for guaranteed accuracy 23 ± 5°C (73.4 ± 9.0°F), 20 to 80% RH (when calibration is…

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17.6 Specifications of Modules
360
17.6.8 8973 Logic Unit
Product warranty period 3 years
Period of guaranteed accuracy 1 year
No. of input channels 4 Probes (16channels)
Input terminals Mini DIN
Applicable probes 9320-01 Logic Probe, MR9321-01 Logic Probe, 9327 Logic Probe
Operating temperature and
humidity
Same as the host Memory HiCorder
Operating environment Same as the host Memory HiCorder
Storage temperature and hu-
midity
Temperature -10 to 50°C (14 to 122°F) Humidity 80% RH or less (non-condensating)
Dimensions Approx. 106 mmW × 19.8 mmH × 204.5 mmD (4.17"W × 0.78"H × 8.05"D)
Mass Approx. 190 g (6.7 oz)
Applicable standards Safety EN61010
EMC EN61326 Class A
17.6 Specifications of Modules
361
Chapter 17 Specifications
16
17
17.6.9 MR8990 Digital Voltmeter Unit
Temperature and humidity
range for guaranteed accuracy
23 ± 5°C (73.4 ± 9.0°F), 20 to 80% RH (when calibration is executed 30 minutes after power on)
Product warranty period 3 years
Period of guaranteed accuracy 1 year
No. of input channels 2 channels
Measurement item DC voltage
Measurement ranges
Measurement accuracy
Temperature characteristic ±(0.002% rdg. + 0.00025% f.s.)/°C
A/D conversion measurement
method
 modulation method
Integration time
NPLC: Settable from 0.1 to 0.9 (in increments of 0.1), 1 to 9 (in increments of 1), and 10 to 100 (in
increments of 10)
Response time Within 2 ms + 2 x integration time (rising –f.s. ¨ +f.s., falling +.f.s. ¨ -f.s.)
Fast response ON/OFF
Common mode rejection ratio 100 dB minimum (at 50/60 Hz and with signal source resistance of 100 maximum)
Input type Unbalanced (floating)
Input terminals Banana jacks
Maximum input voltage 500 VDC
Maximum rated voltage to
earth
300 V AC, DC (between input channels and chassis, and between input channels)
Measurement category II (anticipated transient overvoltage 2500 V)
Operating temperature and
humidity ranges
Same as the host Memory HiCorder
Operating environment Same as the host Memory HiCorder
Storage temperature and hu-
midity ranges
-10°C to 50°C (14°F to 122°F), 80% RH or less (no condensation)
Dimensions Approx. 106 mmW × 19.8 mmH × 196.5 mmD (Approx. 4.17"W × 0.78"H × 7.74"D)
Weight Approx. 260 g (Approx. 9.2 oz.)
Accessories Instruction manual (when shipped alone)
Effect of radiated radio-fre-
quency electromagnetic field
±0.1% f.s. (max) at 3 V/m (in 5 mV/div range)
Applicable standards Safety EN 61010
EMC EN61326 ClassA
Option L2200 Test Lead
* Guaranteed range of measurement accuracy
Measurement Range Effective Input Range
*
Maximum
Resolution
Input Resistance
5 mV/div (f.s. = 100 mV) -120 mV to 120 mV 0.1 V
100 M or more50 mV/div (f.s. = 1000 mV) -1200 mV to 1200 mV 1 V
500 mV/div (f.s. = 10 V) -12 V to 12 V 10 V
5 V/div (f.s. = 100 V) -120 V to 120 V 100 V
10 M ±5%
50 V/div (f.s. = 1000 V) -500 V to 500 V 1 mV
Measurement Range NPLC: Less Than 1 NPLC: 1 or More
5 mV/div (f.s. = 100 mV) ±0.01% rdg. ±0.015% f.s. ±0.01% rdg. ±0.01% f.s.
50 mV/div (f.s. = 1000 mV)
±0.01% rdg. ±0.0025% f.s.
500 mV/div (f.s. = 10 V)
5 V/div (f.s. = 100 V)
±0.025% rdg. ±0.0025% f.s.
50 V/div (f.s. = 1000 V)
Power Frequency Integration Time
50 Hz 20 ms x NPLC
60 Hz 16.67 ms x NPLC
17.6 Specifications of Modules
362
Accuracy figures assume installation in a Memory HiCorder and operation after a 30-minute warm-up period at 23C±5C
(73F±9F) and 80% RH (no condensation).
17.6.10 U8974 High Voltage Unit
Product warranty period 3 years
Guaranteed accuracy period 1 year
Number of input channels 2 channels
Measurement functions Instantaneous value, r.m.s. value (can be changed for each channel)
Measurement range 200 mV, 500 mV, 1 V, 2 V, 5 V, 10 V, 20 V, 50 V/div (mode DC)
500 mV, 1 V, 2 V, 5 V, 10 V, 20 V, 50 V/div (mode RMS)
Measurement accuracy ±0.25% f.s. (Filter 5 Hz On)
RMS measurement accuracy ±1.5% f.s. (DC, not lower than 30 Hz but lower than 1 kHz, sine waves, response time: slow)
±3% f.s. (not lower than 1 kHz but not higher than 10 kHz , sine waves)
Crest factor: 2 (sine waves, the peak voltage is up to 1000 V)
RMS measurement response
time
Fast: 150 ms (rising from 0% f.s. to 90% f.s.)
Normal: 500 ms (rising from 0% f.s. to 90% f.s.)
Slow: 2.5 s (rising from 0% f.s. to 90% f.s.)
Temperature characteristic ±0.05% f.s./C
Frequency characteristic DC to 100 kHz -3 dB
Noise 30 mV p-p (typ.), 50 mV p-p (max.) (highest sensitivity range, with input shorted)
Common mode rejection ratio 80 dB or more (50 Hz/60 Hz input short-circuited)
Low-pass filter OFF, 5±50%, 50±50%, 500±50%, 5 k±50%, 50 k±50% (Hz) -3 dB
Input type Unbalanced input (floating)
Input coupling DC/GND
Input resistance 4 M±1%
Input capacitance 5 pF or less (at 100 kHz)
A/D resolution 16 bits
Maximum sampling rate 1 MS/s
Input terminals Banana jacks
Maximum input voltage 1000 V DC, 700 V AC
Maximum rated voltage to
earth
1000 V AC, DC measurement category III, 600 V AC, DC measurement category IV
(between individual input channels and enclosure as well as between individual input channels)
Anticipated transient overvoltage: 8000 V
Operating temperature and
humidity
As per Memory HiCorder in which Model U8974 is installed
Operating environment As per Memory HiCorder in which Model U8974 is installed
Storage temperature and
humidity
Temperature -20C to 50C (-4F to 122F)
Humidity not lower than -20C but lower than 40C 80% RH or less
(not lower than -4F but lower than 104F) (no condensation)
not lower than 40C but lower than 45C 60% RH or less
(not lower than 104F but lower than 113F) (no condensation)
not lower than 45C but not higer than 50C 50% RH or less
(not lower than 113F but not higer than 122F) (no condensation)
Dimensions Approx. 106W × 19.8H × 196.5D mm (4.17”W × 0.78”H × 7.74”D)
Mass Approx. 230 g (8.1 oz.)
Effect of radiated
radio-frequency electromag-
netic field
±5% f.s. (max.) at 3 V/m
Effect of conducted
radio-frequency electromag-
netic field
±5% f.s. (max.) at 3 V (500 mV/div range, with 1 V DC input)
Standards Safety EN61010
EMC EN61326 Class A
Options Model L4940 Connection Cable Set (1.5 m)
Model L4935 Alligator Clip Set (mounted on the tips of L4940, CAT IV 600 V, CAT III 1000 V)
Model 9243 Grabber Clip (mounted on the tips of L4940, CAT III 1000 V)
Model L4936 Bus Bar Clip Set (mounted on the tips of L4940, CAT III 600 V)
Model L4937 Magnetic Adapter Set (mounted on the tips of L4940, CAT III 1000 V)
Model L4931 Extension CableSet (to extend the length of L4940, 1.5 m)
Model L4932 Test Pin Set (mounted on the tips of L4940, CAT IV 600 V, CAT III 1000 V)
Model L4934
*
Small Alligator Clip Set (CAT III 300 V, CAT II 600 V)
* Model L4932 is necessary when using Model L4934.