Measure Minute Changes in Voltage at a High Level of Precision across 32 Channels at the Same Time
The MR8740 and MR8741 are rack-mountable data acquisition systems that deliver high-speed, multi-channel measurements over maximum of 32+22 channels. The MR8990 DVM unit is a 2-channel input unit for the MR8740/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.
| Measurement functions | Install into Memory HiCorder MR8740/8741 for use; 2 channels of DC voltage measurement | |||||
|---|---|---|---|---|---|---|
| Measurement ranges (20 div. f.s.) |
100 mV range (5 mV/div.): -120.0000 mV to 120.0000mV, 0.1 μV resolution to 500 V range (50 V/div.): -500.000 V to 500.000 V, 1 mV resolution, 5 ranges |
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| Measurement accuracy | Basic accuracy: ±0.01% rdg. ±0.0025% f.s. | |||||
| Max. allowable input | 500 V DC (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; upper limit voltage that can be applied between input channels or between input channels and chassis without damage) | |||||
| Max. sampling rate | 2 ms (500 samples/s) | |||||
| MR8740 | MR8741 | |||||
| Number of channels | Block I: 16 analog units] From 32 analog + 8 standard logic [Block I: 13 analog units + 3 logic units] 26 analog + 56 logic (8 standard logic + 48 logic unit) [Block II: 11 analog units] From 22 analog + 8 standard logic [Block II: 8 analog units + 3 logic units] 16 analog + 56 logic (8 standard logic + 48 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 analog + 16 standard logic [5 analog units + 3 logic units] 10 analog + 64 logic (16 standard logic + 48 logic unit) |
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| *Analog unit channels are isolated from each other and from the recorder. Logic unit channels and standard logic terminal channels share a common GND with the recorder. | ||||||
| Memory capacity | 16 MW/ch (fixed), total of 864 MW installed | 16 MW/ch (fixed), total of 256 MW installed | ||||
| Removable storage | USB memory (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) |
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| 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 (3809.5 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) | ||||
| Included accessories | Instruction manual ×1, Application disk (Wave viewer Wv, Communication commands table) ×1, Power cord ×1 | |||||
