Hioki Memory HiCorders are high-speed waveform monitoring and recording devices that can simultaneously measure multiple physical phenomena such as voltage, current, temperature, vibration, acceleration and rotation due to complete isolation between channels and from each channel to the ground. The MR8847A delivers 20 MS/s sampling (*1), 32 isolated channels, and max. 1000 V direct input, all housed in a tough and field-ready body to properly respond to the most challenging work sites from transformer substations to railway maintenance yards to paper and steel mills.


Basic specifications
Accuracy guaranteed: 1 year
Max. Number of channels 32 ch analog + 16 ch logic, or 20 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] when using the 3CH Current Unit U8977: Max. 3, when using the Current Unit 8971: Max. 4, 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) Built-in logic input not available when using DVM Unit MR8990 on slots 1 or 2.
[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 or 2.
Measurement ranges (20 div full-scale) [Analog unit 8966]: 5 mV/div to 20 V/div, 12 ranges, resolution : 1/100 of range (using 12-bit A/D)
[High Voltage Unit U8974]: 200 mV/div to 50 V/div, 8 ranges, resolution : 1/1600 of range (using 16-bit A/D)
Max. allowable input 400 V DC (using the 8966), 1000 V DC (using the U8974)
Frequency characteristics DC to 5 MHz (-3 dB, using the 8966), DC to 100 kHz (using the U8794)
Time axis (Memory function) 5 µs to 5 min/div (100 samples/div) 26 ranges, External sampling (100 samples/div, or free setting), Time axis zoom: x2 to x10 in 3 stages, compression: 1/2 to 1/200 000 in 16 stages
Measurement functions MEMORY (high-speed recording), RECORDER (real-time recording), X-Y RECORDER (X-Y real-time recording), FFT
Other functions Waveform judgment (at Memory or FFT function)
Memory capacity MR8847-51: Total 64 M-words (Memory expansion: none)
32 MW/ch (using 2 Analog channels), to 2 MW/ch (using 32 Analog channels)
MR8847-52: Total 256 M-words (Memory expansion: none)
128 MW/ch (using 2 Analog channels), to 8 MW/ch (using 32 Analog channels)
MR8847-53: Total 512 M-words (Memory expansion: none)
256 MW/ch (using 2 Analog channels), to 16 MW/ch (using 32 Analog channels)
Removable storage CF card slot (standard) ×1 (up to 2GB, FAT, or FAT-32 format), SSD (128 GB, optional), USB memory stick (USB 2.0)
Printing 216 mm (8.50 in) × 30 m (98.43 ft), thermal paper roll, Recording speed : Max. 50 mm (1.97 in)/s
Display 10.4 inch TFT color LCD (SVGA, 800 × 600 dots)
Displayable languages English, Japanese, Korean, Chinese
External interfaces [LAN] 100BASE-TX (FTP server, HTTP server), [USB] USB2.0 compliant, series A receptacle ×1, series B receptacle ×1, (File transfer internal drive/CF card to PC, or remote control from PC)
Power supply 100 to 240 V AC, 50/60 Hz (130 VA max., when using printer: 220 VA max.),
10 to 28 V DC (when using the optional factory-installed DC Power Unit 9784)
Dimensions and mass 351 mm (13.82 in) W × 261 mm (10.28 in) H × 140 mm (5.51 in) D,
7.6 kg (268.1 oz) (main unit only)
Included accessories Instruction manual ×1, Measurement guide ×1, Application disk (Wave viewer Wv, Communication commands table) ×1, Power cord ×1, Input cord label ×1, USB cable ×1, Printer paper ×1, Roll paper attachment ×2, Ferrite clamp ×1
LabVIEW and MATLAB support
Compatible models
MATLAB script