| Hioki FREQ UNIT 8970 General Specifications |
| Measurement functions |
No. of channels: 2, for voltage input based frequency measurement, rotation, power frequency, integration, pulse duty ratio, pulse width |
| Input terminals |
Isolated BNC connector (input impedance 1 MΩ, input capacitance 30 pF), Max. rated voltage to ground: 300 V AC, DC (with input isolated from the unit, the maximum voltage that can be applied between input channel and chassis and between input channels without damage) |
| Frequency mode |
Measurement range: Between DC to 100 kHz (minimum pulse width 2 µs), 20 Hz to 100 kHz f.s., 8 ranges
Accuracy: ±0.1% f.s. (exclude 100 kHz range), ±0.7% f.s. (100 kHz range) |
| Rotation mode |
width 2µs), 2 kr/min to 2 Mr/min f.s, 7 ranges
Accuracy: ±0.1% f.s. (exclude 2 Mr/min range), ±0.7% f.s. (2 Mr/min range) |
| Power frequency mode |
Measurement range: 50 Hz (40 to 60 Hz), 60 Hz (50 to 70 Hz), 400 Hz (390 to 410 Hz), 3 ranges
Accuracy: ±0.03 Hz (50, 60 Hz), ±0.1 Hz (400 Hz range) |
| Integration mode |
Measurement range: 40 k-counts f.s. to 20 M-counts f.s. 6 ranges
Accuracy: ±0.0025% f.s. |
| Duty ratio mode |
Measurement range: Between 10 Hz to 100 kHz (minimum pulse width 2 µs), 100% f.s.
Accuracy: ±1% (10 Hz to 10 kHz), ±4% (10 kHz to 100 kHz) |
| Pulse width mode |
Measurement range: Between 2 µs to 2 s, 10 ms to 2 s f.s. Accuracy: ±0.1% f.s. |
| Measurement resolution |
0.0025% f.s. (Integration mode), 0.01% f.s. (exclude integration, power frequency mode), 0.01 Hz (power frequency mode) |
| Input voltage range and threshold level |
±10 V to ±400 V, 6 ranges, selectable threshold level at each range |
| Other functions |
Slope, Level, Hold, Smoothing, Low-pass filter, Switchable DC/AC input coupling, Frequency dividing, Integration over-range keep/return |
| Dimensions |
106 mm (4.17 in) W × 19.8 mm (0.78 in) H × 196.5 mm (7.74 in) D |
| Weight |
250 g (8.8 oz) |