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.


Basic specifications
Accuracy guaranteed: 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)
Included accessories Instruction manual ×1, Application disk (Wave viewer Wv, Communication commands table) ×1, Power cord ×1
LabVIEW and MATLAB support
Compatible models
MATLAB script