Hioki Memory Hicorder MR8740, MR8741

High-speed, 54- or 16-channel Memory Recorders Provide Advanced Data Acquisition and Rack-Mount Systems Integration

Hioki Memory HiCorders are high-speed waveform monitoring and recording devices that can simultaneously measure multiple physical phenomena such as voltage, current, temperature, vibration, weight, acceleration and rotation due to complete isolation between channels and from each channel to the ground. The 54- and 16-channel MR8740 and MR8741 are integratable data acquisition (DAQ) systems suited for the performance testing of electric vehicle inverters, motors, and batteries.

• MR8740 (54-ch model, 864 MW memory, main unit only)
• MR8741 (16-ch model, 256 MW memory, main unit only)
* Main unit MR8740/8741 requires input units and other dedicated options. Input cords not included. For more information about input cords and other common options, refer to the detailed catalog.

Introducing the DVM Unit MR8990 with high 24-bit resolution! Perform high-speed, high-accuracy measurement without going through a scanner.
• Support for multichannel measurement (MR8740: up to 54 ch; 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; 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)
• Remote measurement via LAN communications (data stored in built-in memory; operate remotely from a PC)

Basic specifications (accuracy guaranteed for 1 year)

  MR8740 MR8741
Number of channels [Block I: 16 analog units]
From 32 ch analog + 8 ch standard logic inputs
[Block I: 13 analog units + 3 logic units]
26 ch analog + 56 ch logic (8 ch standard logic + 48 ch logic unit)

[Block II: 11 analog units]
From 22 ch analog + 8 ch standard logic
[Block II: 8 analog units + 3 logic units]
16 ch analog + 56 ch logic (8 ch standard logic + 48 ch logic unit)
*Instrument consists of two blocks, Block I and Block II.
*Block I and Block II start measurement simultaneously by means of trigger synchronization (internal setting)
[8 analog units]
From 16 ch analog + 16 ch standard logic
[5 analog units + 3 logic units]
10 ch analog + 64 ch logic (16 standard logic + 48 logic unit)
  Analog unit channels are isolated from each other and from chassis. Logic unit channels and standard logic terminal channels share a common GND with chassis.
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 16 MW/ch (fixed), total of 256 MW installed
Removable storage USB memory stick (USB 2.0)
Display None (1 digital DVI terminal per block, 800 × 600 dots) 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 (250 VA max.) 100 to 240 V AC, 50/60 Hz (120 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) 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


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