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.

Model No. (Order Code)

MR8740Max. 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.

*Screen monitoring and remote operation available
via Internet browser. For faster and more convenient remote
operation, we recommend using the Hioki 9333
LAN Communicator.

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

Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 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 input400 V DC (when using 8966; upper limit voltage that can be applied between input terminals without damage)
Max. rated voltage to earth300 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 characteristicsDC 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 functionsMemory (high-speed recording), FFT
Memory capacity16 MW/ch (fixed), total of 864 MW installed
Removable storageUSB memory stick (USB 2.0)
DisplayNone (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 supply100 to 240 V AC, 50/60 Hz (250 VA max.)
Dimensions and mass426 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)
AccessoriesInstruction manual × 1, Application disk (Wave viewer Wv, Communication commands table) × 1, Power cord × 1

LabVIEW and MATLAB support

Compatible modelsLabVIEWMATLAB script
Catalog: iPad App for Memory HiCorder HMR TerminalDownload PDF  [1MB]English
Catalog: MEMORY HiCORDER MR8740, MR8741Download PDF  [4MB]English
Catalog: Waveform Generator System U8793,MR8847ADownload PDF  [2MB]English
Catalog: Digital Multi-Module (DMM) Station MR8990+MR8741/MR8740Download PDF  [2MB]English

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