MEMORY HiCORDER MR8740

Single-device Solution for Waveform Recording and Generation, High-speed 54-channel/Isolated Multi-channel System Recorders (rack-mounted)

The MR8740 is rack-mountable data acquisition system that delivers high-speed, multi-channel measurements over maximum of 32+22 channels. The MR8990 DVM module is a 2-channel input unit for the MR8740 for measuring minute fluctuations in output from sensors in automobiles and other equipment and voltage fluctuations in devices such as batteries at high levels of precision and resolution.

Use with the Arbitrary Waveform Generator Unit U8793 to create a function generator, arbitrary waveform generator, and waveform measurement in a single device.

Key Features

  • Introducing the DVM Unit MR8990 with high 24-bit resolution! Perform high-speed, high-accuracy measurement without going through a scanner.
  • Support for multi-channel measurement (MR8740: up to 54 ch)
  • Isolated input (between input channels; input-to-chassis isolation: maximum input-to-ground rated voltage of 300 V AC/DC)
  • High-speed sampling (max. 20 MS/s; with 54-ch type, simultaneous sampling of up to 32 ch)
  • Ideal for rack-mounting (4U height/within 180 mm; display-less, box-type design)
  • Display waveforms and make settings on a DVI-D connected monitor and mouse
  • Remote measurement via LAN using control commands from a PC (*1)
  • *1:Screen monitoring and remote operation available via Internet browser. For faster and more convenient remote operation, we recommend using the Hioki 9333 LAN Communicator.

Model No. (Order Code)

MR8740 Max. 54ch, 864MW memory, main unit only
Main unit MR8740/MR8741 cannot operate alone. Use up to 4 units of 8971 with MR8740; not compatible with MR8741.

Free iPad app for Memory HiCorder HMR Terminal available from the App Store.

Basic specifications

Accuracy guaranteed: 1 year, Accuracy guarantee period after adjustment made by Hioki: 1 year
Max. Number of channels [Block I] 32 ch analog + 8 ch logic, or 29 ch analog + 56 ch logic (when used with built-in logic input + plug-in logic unit 8973 × 3)

[Block II] 22 ch analog + 8 ch logic, or 19 ch analog + 56 ch logic (when used with built-in logic input + plug-in logic unit 8973 × 3)
Number of slots [Block I] 16 slots (Max. 16)
[Block II] 11 slots (Max. 11)

[Limitation on number of slots] when using the Current Unit 8971: Max. 4,
When using the Logic Unit 8973: [Block I] Max. 3; cannot use slots 9 to 16
[Block II] Max. 3; cannot use slots 9 to 11
Number of logic channels [Block I] 8 ch logic (Logic probe terminal GND share a common GND with chassis. )
[Block II] 8 ch logic (Logic probe terminal GND share a common GND with chassis. )

[Limitation on using built-in logic input] applies to both Block I and Block II (with logic measurement ON)
- Measurement resolution on slots 1 and 2 is limited up to 12 bits
- Cannot use Frequency Unit 8970 on slots 1 and 2
- When using the DVM Unit MR8990 on slots 1 or 2: cannot use built-in logic input
Measurement ranges (20 div full scale) 5 mV to 20 V/div, 12 ranges, resolution : 1/100 of range (when using 8966)
5 mV to 50 V/div, 5 ranges, resolution : 1/50,000 of range (when using MR8990)
Max. allowable input 400 V DC (when using 8966; upper limit voltage that can be applied between input terminals without damage)
Max. rated voltage to earth 300 V AC/DC (input and instrument are isolated; between input channels and chassis; upper limit voltage that can be applied between input channels without damage)
Frequency characteristics DC to 5 MHz (-3 dB, when using 8966)
Time axis (MEMORY operation) 5 µs to 5 min/div; 26 ranges; time axis resolution: 100 points/div; time axis expansion: 3 stages from ×2 to ×10; compression: 13 stages from 1/2 to 1/20,000
Measurement functions Memory (high-speed recording), FFT
Memory capacity 16 MW/ch (fixed), total of 864 MW installed
Removable storage USB memory stick (USB 2.0)
Display None (1 digital DVI terminal per block, 800 × 600 dots)
External interfaces [LAN] 100Base-TX (DHCP and DNS support, FTP server, HTTP server)
[USB] USB 2.0 Series A receptacle × 2 (mouse operation)
Power supply 100 to 240 V AC, 50/60 Hz (250 VA max.)
Dimensions and mass 426 mm (16.77 in) W × 177 mm (6.97 in) H × 505 mm (19.88 in) D, 10.8 kg (381.0 oz) (main unit only)
Accessories Instruction manual × 1, Application disk (Wave viewer Wv, Communication commands table) × 1, Power cord × 1

LabVIEW and MATLAB support

Compatible models LabVIEW MATLAB script
MR8740 Available Available
MR8741 Available Available

Storage media (1)

Use only CF Cards or USB drives sold by HIOKI. Compatibility and performance are not guaranteed for CF cards/USB memory sticks made by other manufacturers. You may be unable to read from or save data to such cards.

Output cable (2)

* Please contact your local HIOKI distributor for connectors that support Model MR8791.

Input cable (A) (4)

*Voltage is limited to the specifications of the input modules in use

Input cable (B) (3)

*Voltage is limited to the specifications of the input modules in use

Input cord (D) (2)

Custom cable (0)

*For P9000. Inquire with your Hioki distributor.

(1) Bus powered USB cable
(2) USB(A)- Micro B cable
(3) 3-prong cable

Input cable (E) (2)

*Voltage to ground is within this product's specifications. Separate power source is also required.

Input cable (F) (6)

* Voltage input via banana terminals limited by the voltage specifications of the respective input unit.

Input cable (G) (1)

* For the MR8990 *Voltage is limited to the specifications of the input modules in use

Non-contact voltage measurement (3)

Other options for input (4)

Temperature sensor (0)

*For reference only. Please purchase locally.

Thermocouple

PL23 (10-pin) - ME15W (12-pin) conversion (1)

*The separately available Conversion Cable CT9900 is required in order to use a sensor with PL23 (10-pin) terminal.

POWER SUPPLY for Current Sensors (4)

*A separate power supply (CT955x) is required in order to use a high-precision current sensor.

*Only sensors with ME15W (12-pin) terminals (-05 type) can be connected to the CT955x.

Direct connectable with the Current Sensor (3)

ME15W (12-pin) - PL23 (10-pin) conversion

*The separately available Conversion Cable CT9901 is required in order to use a high-precision current sensor equipped with a ME15W (12-pin) terminal (-05 type) with the Current Unit 8971 (which is designed for use with the MR8847, MR8827, and MR8740).
*While the CT955x is not required in order to use a sensor equipped with a PL23 (10-pin) terminal with the 8971 or 8940, the Conversion Cable 9318 (which comes with the 8971) is required for that setup.

Precautions when connecting a high-precision current sensor to a Memory HiCorder (0)

Connecting to the MR8847A / MR8827 / MR8740
• High-precision current sensor (ME15W) + CT9901 + 9318 → CURRENT UNIT 8971
• High-precision current sensor (ME15W) + CT955x + BNC cable → except CURRENT UNIT 8971
• High-precision current sensor (PL23) + 9318 → CURRENT UNIT 8971
• High-precision current sensor (PL23) + CT9900 + CT955x + BNC cable → except CURRENT UNIT 8971
Connecting to the MR8741
• High-precision current sensor (ME15W) + CT955x + BNC cable → except CURRENT UNIT 8971
• High-precision current sensor (PL23) + CT9900 + CT955x + BNC cable → except CURRENT UNIT 8971
Note: CURRENT UNIT 8971 is not compatible with the MR8741


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