The HIOKI MR8870-20 Memory HiCorder combines oscilloscope-style waveform capture with RMS trend recording in a portable instrument. It is suited to machine, motor, elevator and sequence-control troubleshooting.
Configuration: The PRO Kit includes two L9197 cords and one 9780 battery. Input cords and battery are not supplied with the main-unit-only version. Logic probes and current sensors are sold separately; cord ratings do not increase the recorder input rating.

Contact RCC Electronics for configuration assistance and Canadian application support.
Instrument specifications apply under HIOKI's stated measurement conditions. Kit contents are listed separately.
| Number of channels | 2 analog channels + 4 logic channels (standard) Note: Isolated analog channels, isolated input and frame, logic has common GND |
|---|---|
| Measurement ranges | 10 mV to 50 V/div (10 div full-scale), 12 ranges, Resolution: 1/100 of range |
| Max. rated voltage | Between terminals: 400 V DC, Between terminal to earth: 300 V AC, DC CAT II |
| Frequency characteristics | DC to 50 kHz (-3 dB) |
| Time axis (Memory mode) | 100 µs to 5 min/div, 20 ranges, at 100 points/div resolution, three steps of time-axis magnification from ×2 to ×10, and 9 steps of time-axis compression from ×1/2 to ×1/1,000 |
| Recording intervals (RMS mode) | 1 ms to 1 min., 16 settings, sampling period: 200 μs (fixed) (for AC voltage/current, 1,000 RMS values/sec.), envelope mode always on Note: Only the maximum value and minimum value for each recording interval are recorded. |
| Measurement functions | Memory recorder (high speed recording), RMS recorder (50/60 Hz, DC only) |
| Memory capacity | 12-bits × 2M-words/ch (1 word = 2 bytes) |
| Removable storage | CF card TYPE I slot ×1 (Up to 2 GB) |
| Display | 4.3-inch WQVGA-TFT color LCD (480 × 272 dots) |
| Displayable languages | English, Japanese |
| Interfaces | USB 2.0 mini-B receptacle ×1, Functionality: Connect the instrument to a PC to send files on the CF card to the PC. The instrument cannot be controlled from a PC. |
| Printer | N/A |
| Power supply | AC Adapter Z1005: 100 to 240 V AC (50/60 Hz) , 30 VA max. (when using the AC adapter and charging the 9780 with the instrument) Battery Pack 9780: 3 VA, continuous operating time of approx. 2 hr. (25°C reference value; when used with the Z1005, the Z1005 takes priority), charging time of 200 min. using the AC adapter (25°C reference value) (option) External DC power: 10 to 16 V, 10 VA max. (connection cord of 3 m or less is available by special-order) |
| Dimensions and mass | 176 mm (6.93 in.)W × 101 mm (3.98 in.)H × 41 mm (1.61 in.)D, 600 g (21.2 oz.) (with the Battery pack 9780 installed) |
This main-unit configuration is supplied with the standard items below.
| Qty | Model | Included item |
|---|---|---|
| 1 | MR8870-20 | Memory HiCorder |
These are supplied with the main instrument. Items already counted in the kit table are not repeated.
| Qty | Model | Included item |
|---|---|---|
| 1 | Z1005 | AC adapter |
| 1 | L1003 | USB cable |
| 1 | 9809 | Protection sheet |
| 1 | — | Strap |
| 1 | — | Instruction manual |
| 1 | — | Measurement guide |
Included versus optional: The PRO Kit includes two L9197 cords and one 9780 battery. Input cords and battery are not supplied with the main-unit-only version. Logic probes and current sensors are sold separately; cord ratings do not increase the recorder input rating.