MEMORY HiCORDER MR8741

Single-device Solution for Waveform Recording and Generation, High-speed 16-channel/Isolated Multi-channel System Recorders (rack-mounted)

The MR8741 is rack-mountable data acquisition system that delivers high-speed, multi-channel measurements over maximum of 16 channels. The MR8990 DVM module is a 2-channel input unit for the MR8741 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 (MR8741: up to 16 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)
  • 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)

MR8741 Max. 16ch, 256MW memory, main unit only
Main unit MR8740/MR8741 cannot operate alone. Use up to 4 units of 8971 with MR8740; not compatible with MR8741.

Basic specifications

Accuracy guaranteed: 1 year, Accuracy guarantee period after adjustment made by Hioki: 1 year
Max. Number of channels 16 ch analog + 16 ch logic, or 10 ch analog + 64 ch logic (when used with built-in logic input + plug-in logic unit 8973 × 3)
Number of slots 8 slots (Max. 8)
[Limitation on number of slots] cannot use Current Unit 8971 When using the Logic Unit 8973: Max. 3
Number of logic channels 16 ch logic (Logic probe terminal GND share a common GND with chassis. ) on condition that DVM Unit MR8990 is used on slots 1 and 2, cannot use built-in logic input
[Limitation on using built-in logic input] (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
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, Recorder
Memory capacity 16 MW/ch (fixed), total of 256 MW installed
Removable storage USB memory stick (USB 2.0)
Display None (1 digital DVI terminal, 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 (120 VA max.)
Dimensions and mass 350 mm (13.78 in)W × 160 mm (6.30 in)H × 320 mm (12.60 in)D, 5.4 kg (190.5 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

Up to 200 A (High precision) (5)

Up to 1000 A (High precision) (5)

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

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

Directly connect currents sensors (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


Related Products