Digital Multi-Module (DMM) Station MR8990+MR8741

Digital Multi-Module (DMM) Station MR8990+MR8741
Digital Multi-Module (DMM) Station
Measuret from 16 digital multimeters in a single device
16ch isolated, full simultaneous sampling
Multi-channel measurements,
no scanner required
Simultaneous sampling across all channels
High-speed/high-precision measurement without a scanner
Uniform data management
The MR8741/MR8740 can save data from 16 digital
multimeters at once
Useful as a powerful high-speed/high-precision data logger
Observe changes using waveforms and area judgment
Monitor voltage waveforms and set thresholds for
pass/fail evaluations
High-resolution 6 1/2-digit
Max resolution of 0.1 μV, covering micro-voltage
changes in sensors and other devices
Extended applications
Eight interchangeable modules available
Simultaneously record temperature, distortion, logic, etc.
Save space and power
Modular design uses smaller overall footprint and wiring
is simple - all you need is one power cord and one LAN
cable for PC control. Maximum power consumption is
120 VA, even at 16ch.
Measure from 16 digital multimeters in a single device
Dimensions/weight (with 8 modules installed)
Approx. 350W×160H×320D mm (13.78W×6.30H×12.60in),
7.8 kg (275.1 oz)
DVM UNIT MR8990: the heart of the system
±0.01% precision and 0.1 μV resolution
New module for DMM STATION MR8741/8740
The DVM UNIT MR8990 is a 2-channel V DC measurement module for the
MR8741/8740. It can measure minute fluctuations in output from sensors in automobiles and other equipment, as well as voltage fluctuations in devices such as batteries,
at high levels of precision and resolution.
 High precision: ±0.01% rdg. ±0.0025% f.s.
 Max. allowable input: DC 500 V
High precision measurement is delivered even at 500 samples/sec
All input channels are individually isolated
High resolution: 6
display (0.1 μV resolution), 24-bit
Even minute fluctuations in the output voltage of sensors and other equipment can be measured. Max 1200000 counts
* Specifications
Effective input range(*)
100 mV (5 mV/div)
-120.0000 mV to 120.0000 mV
1000 mV (50 mV/div)
-1200.000 mV to 1200.000 mV
10 V (500 mV/div)
-12.00000 V to 12.00000 V
100 V (5 V/div)
-120.0000 V to 120.0000 V
1000 V (50 V/div)
-500.000 V to 500.000 V
 Measurement accuracy
Measurement range:
100 mV (5 mV/div)
Input resistance
More than
100 MΩ
10 MΩ ±5%
(*) Guaranteed measurement accuracy range
NPLC: Less than 1
NPLC: More than 1
±0.01% rdg. ±0.015 %f.s.
±0.01% rdg. ±0.01% f.s.
1000 mV (50 mV/div)
10 V (500 mV/div)
100 V (5 V/div)
1000 V (50 V/div)
100 mV range to 10 V range: More than 100 MΩ
100 V range to 1000 V range: 10 MΩ±5%
(Product quality and accuracy guaranteed for one year)
 Measurement range
Measurement range:
 High input resistance
±0.01% rdg. ±0.0025% f.s.
±0.025% rdg. ±0.0025% f.s.
 Temperature characteristics: ±(0.002% rdg. ±0.00025% f.s.)/oC
 A/D conversion
: ΔΣ modulation method 24-bit
measurement method
 Measurement functions
 Number of channels
: 2ch
 Maximum sampling rate
: 2 ms (500 samples/sec)
 Max. allowable input
: 500 V DC
 Max. rated voltage to earth : 300 V AC/DC
Options for MR8990
One set (Red × 1, Black × 1) , 70 cm (2.30 ft) length
Unit jack: Banana terminal
Pin leads and alligator clips
Replaceable clips
Max. allowable input: CAT IV 600 V, CAT III 1000 V
(f.s. = measurement range)
 Integration time
Power supply frequency
Integration time
50 Hz
20 ms × NPLC
60 Hz
16.67 ms × NPLC
Can be set to 0.1 to 0.9 (step 0.1) /
1 to 9 (step 1) /10 to 100 (step 10)
The number of power line cycles (NPLC), which indicates the number of cycles in the power supply’s period (50 Hz or 60 Hz), determines the integration time.
Larger NPLC values result in more effective rejection of noise caused by the power supply at the expense of lower sampling speeds.
The MR8990 cannot measure AC voltage, current,
or resistance. Select from other modules for a variety
of measurement options.
Superior functions and features you won't find in general-purpose digital multimeters.
Fully isolated 16ch simultaneous sampling
All 16 channels can be sampled at the same time. There's none of the
time lag that appears when using a scanner to switch between multiple
measurement devices, providing you full simultaneous sampling. Make
completely accurate measurements without misalignment in start times
or between channels. Inputs are also isolated for all channels.
Plug-in module design
Inputs are user-exchangeable plug-in modules. By combining
different modules, it is possible to measure temperature, logic
signals and other data types along with DC voltage. Current can
also be measured by using a clamp-on AC/DC sensor (Hioki
CT9690 series).
Area-based evaluation
Define a detection area to evaluate
the shape of measured waveforms.
Evaluation area
This is useful for battery-discharge
and power supply durability testing.
The instrument’s real-time* evaluation
capability also allows it to be used
for constant monitoring. Evaluation
results can also be output to external device.
(*) In slow ranges (time axis range: 100 ms/div or less)
All channels displayed as waveforms
The MR8741 can generate time
plots depicting all channels on the
same time axis, and it can measure
wavefor m levels over extended
periods of time. Values are displayed
on the connected display or PC
screen. You can also switch between
waveform and value display during
Scaling functions
Voltage output from sensors and other equipment can be converted into
actual physical quantities for measurement and display.
Ex.: Convert shunt resistance voltage to current
2 mΩ
(1 V to 500 A)
Waveform calculation functions
Wave calculations can be applied to measured wavefor ms.
This is useful for checking changes in potential differences between
battery cells (cell 1 - cell 2) or DC power (voltage × current). Up to 16
calculations can be defined simultaneously for any given channel. 10
function types are available, in addition to arithmetic operations.
Numerical calculation functions
Numerical calculations can be performed on all measurement data or on
a subset of the measurement data. A total of 24 calculations, including
interval-specific maximum, minimum, and average values, can be
performed using data measured at high precision with the DVM unit on
user-specified channels, and up to 16 calculations can be performed
simultaneously. Upper/lower limit can also be defined for calculation
results, allowing for value-based evaluation.
Before scaling
After scaling
Triggers can be applied based
on signals input from an external
source, logic, or other means,
and the voltage value at the
point of trigger application can
be measured at a high degree of
precision with the MR8990. The
pre-trigger function can be used
to observe data leading up to the
trigger. In addition, modules other than the MR8990 provide a variety of
triggers, including level triggers.
EV battery evaluation
Support for high precision,
high resolution voltage measurement
* Hardware setup example
×as needed
TEMP UNIT 8967 ×1
Voltage measurements for battery cells, which requires
high precision and resolution, is possible at 24-bit
resolution ±0.01% rdg. ±0.0025% f.s.
The module boasts high input resistance,
reducing impact on the measurement target.
Modules can be combined to simultaneously
record temperature and other data.
 Battery evaluation
(Example control signal and charge/
discharge time measurement)
* Available modules
24-bit, 61/2-digit display
High precision
AC waveform measurement
12-bit, 20 MS/s
AC/DC waveform measurement
16-bit, 1 MS/s
AC voltage measurement
RMS measurement
Voltage measurement (DC)
Voltage measurement
Voltage measurement
Voltage measurement (DC/RMS selectable)
Measurement range:
Banana input jack
Max. rated voltage to earth (*): 300 V AC/DC
5 mV to 50 V/div, 5 ranges
Isolated BNC connector
Max. rated voltage to earth (*): 300 V AC/DC
5 mV to 20 V/div, 12 ranges
Isolated BNC connector
Max. rated voltage to earth(*): 300 V AC/DC
5 mV to 20 V/div, 12 ranges
Isolated BNC connector
Max. rated voltage to earth (*): 300 V AC/DC
5 mV to 20 V/div, 12 ranges
Measurement resolution
24-bit, 1/50000 of measurement range
12-bit, 1/100 of measurement range
16-bit, 1/1600 of measurement range
12-bit, 1/100 of measurement range
Maximum sampling rate
500 S/s
20 MS/s
1 MS/s
±0.01% rdg. ±25 dgt.
±0.5% f.s.
±0.3% f.s.
DC to 5 MHz (-3 dB)
AC connection: 7 Hz to 100 kHz (-3 dB)
400 V DC
DC to 100 kHz (-3 dB)
AC connection: 7 Hz to 100 kHz (-3 dB)
400 V DC
1 MS/s
±0.5% f.s.
RMS accuracy: ±1% f.s. (DC, 30 Hz to 1 kHz)
DC to 400 kHz (-3 dB)
AC connection: 7 Hz to 400 kHz (-3 dB)
400 V DC
Measurement functions
Number of channels
Input connectors:
Frequency characteristics
Max. allowable input
500 V DC
(Detailed MR8890 specifications on P.2)
Measurement functions
Number of channels
Measurement resolution
(*) Input and instrument are isolated from each other, the max. voltage that can be applied between input channel and chassis and between input channels without damage
Control signals
Temperature measurement with thermocouple
Distortion measurement
Frequency measurement using voltage input
Logic measurement using an optional probes
16 channels (up to 4 logic probes can be connected)
16-bit, 1/1000 of measurement range
16-bit, 1/1250 of measurement range
16-bit, 1/2000 of measurement range
(Integration mode)
Mini-DIN terminal (HIOKI logic probes only)
Compatible logic probes:
Input connectors
Thermocouple input: Push-button type
Max. rated voltage to earth (*): 300 V AC/DC
Input connectors: Weidmuller SL 3.5/7/90G
(Connector compatible with included
conversion cable 9769: Tajimi PRC03-12A10- Input connectors: Isolated BNC connector
Max. rated voltage to earth(*): 300 V AC/DC
Max. rated voltage to earth(*): 33 V AC rms ,
or 70 V DC
Temperature measurement range:
10°C/div (-100 to 200°C)
50°C/div (-200 to 1000°C)
100°C/div (-200 to 2000°C)
Suitable converter:
Frequency measurement range:
Distortion gauge converter, bridge resistance DC to 100 kHz (minimum pulse width: 2 μs)
120 Ω to 1 kΩ, bridge voltage 2 V±0.05 V,
Accuracy: ±0.1% f.s. (except 5 kHz/div),
gauge ratio 2.0
±0.7% f.s. (at 5 kHz/div)
Thermocouple range:
K: -200 to 1350°C
J: -200 to 1100°C
E: -200 to 800°C
T: -200 to 400°C
N: -200 to 1300°C
R: 0 to 1700°C
S: 0 to 1700°C
B: 400 to 1800°C
W (WRe5-26): 0 to 2000°C
Reference junction compensation: internal/
external (switchable)
Line fault detection ON/OFF possible
Thermocouple K, J, E, T, N: ±0.1% f.s. ±1°C
(±0.1% f.s. ±2°C at -200°C to 0°C)
Thermocouple R, S, B, W: ±0.1% f.s. ±3.5°C
(at 0°C to 400°C; B accuracy not guaranteed under
±0.1% f.s. ±3°C (400°C and up)
Reference junction compensation accuracy: ±1.5°C
(added to measurement accuracy with internal
reference junction compensation)
Measurement range:
20 μe to 1000 μe/div, 6 ranges,
fullscale: 20 div
Low-pass filter: 5/10/100/1 kHz
Max. sampling rate: 200 kS/s
Measurement accuracy (after auto-balance):
±(0.5% f.s. +4 μe) (filter 5 Hz ON)
Frequency characteristics: DC to 20 kHz
+1/-3 dB
Rotation measurement range: 0 to 2 million
Accuracy: ±0.1% f.s. (excluding 100 k (r/min)/
±0.7% f.s. (at 100 k (r/min)/div)
Power supply frequency measurement range:
50 Hz (40 to 60 Hz), 60 Hz (50 to 70 Hz),
400 Hz (390 to 410 Hz)
Accuracy: ±0.03 Hz (50, 60 Hz), ±0.1 Hz
(400 Hz)
Integrated measurement range: 2 k to 1 M
Accuracy: ±range/2000
Duty ratio measurement range: 0 to 100 kHz
Accuracy: ±1% (10 to 10 kHz), ±4% (10k to
100 kHz)
Pulse width measurement range:
500 μs/div for 2 μs to 2 sec ranges
100 ms/div (f.s. = 20 div)
Accuracy: ±0.1% f.s.
■ LOGIC PROBE 9320-01/9327
Detection of voltage signal or relay contact signal for High/Low
state recording
Input: 4 channels (common ground between unit and channels),
digital/contact input switchable
(contact input can detect open-collector signals)
Digital input threshold: 1.4 V / 2.5 V / 4.0 V
Response speed: 9320-01: 500 ns or lower
9327: Detectable pulse width 100 ns or higher
Max. allowable input: 0 to + 50 V DC
(max.voltage that can be applied across input pins without damage)
Detection of AC or DC relay drive signal for High/Low state
recording. Can also be used for power line interruption detection
Input: 4ch (isolated between instruments and between channels),
HIGH/LOW range switchable
Output (H) detection:
170 to 250 V AC, ±70 to 250 V DC (HIGH)
60 to 150 V AC, ±20 to 150 V DC (LOW)
Output (L) detection:
0 to 30 V AC, ±0 to 43 V DC (HIGH)
0 to 10 V AC, ±0 to 15 V DC (HIGH)
Response time:
Rising edge 1 ms max., falling edge 3 ms max.
(with HIGH range at 200 V DC, LOW range at 100 V DC)
Max. allowable input: 250 Vrms (HIGH), 150 Vrms (LOW)
(max.voltage that can be applied across input pins without damage)
Up to three modules can be installed in a single instrument (or 1 block)
(*) Input and instrument are isolated from each other, the maximum voltage that can be applied between input channel and chassis and between input channels without damage.
Model : Digital Multi-Module (DMM) Stations
Model No. (Order Code) (Note)
(For the MR8740/MR8741, MR8827, etc.)
(Max. 54ch, 864MW memory, main unit only)
(Max. 16ch, 256MW memory, main unit only)
Note: Instrument requires input units and other dedicated options. Input cords not
included. The MR8990 cannot operate alone.
Note: Company names and Product names appearing in this catalog are trademarks or registered trademarks of various companies.
TEL +86-21-63910090 FAX +86-21-63910360 / E-mail: [email protected]
TEL +65-6634-7677 FAX +65-6634-7477
E-mail: [email protected]
81 Koizumi, Ueda, Nagano, 386-1192, Japan
TEL +81-268-28-0562 FAX +81-268-28-0568
HIOKI KOREA CO., LTD. / E-mail: [email protected] TEL +82-2-2183-8847 FAX +82-2-2183-3360
E-mail: [email protected]
TEL +1-609-409-9109 FAX +1-609-409-9108 / E-mail: [email protected]
All information correct as of Dec. 20, 2016. All specifications are subject to change without notice.
Printed in Japan
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