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| Recorder Option (Input units for the MEMORY HiCORDER series) |
F/V UNIT 8955 |
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| Handles tasks ranging from pulse input from rotary equipment to voltage measurement |
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This unit is one input channel. In addition to frequency measurement, this single unit handles integration measurement, pulse duty ratio measurement and voltage measurement.
To measure high voltages, this into comes equipped with a power terminal for the DIFFERNTIAL PROBE 9322. It can alse be connected directly to each channel.
- Simply slot the 8955 into the Digital Oscillo Series MEMORY HiCORDER 8855 for use.
- Rapid 10 µs F/V input response
- Suitable applications
Engine or crank rotation, Wheel and transmission gear rotation, Vehicle speed encoder output, Fuel, cooling water flow quantity, Handle angle, Dynamo frequency for generators. |
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| Basic specifications |
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| Measurement functions |
Number of channels: 1, Measurements: frequency of voltage input, power frequency, revolution speed, integration, pulse duty comparison, pulse width |
| Input |
Metal BNC connector, Max. rated voltage to earth: 30 V rms or 60 V DC (with input isolated from the unit, the maximum voltage that can be applied between input channels and chassis, or across input pins, without causing damage) |
| Measurement range |
Frequency: 0.1 Hz to 5 kHz/division between DC to 100 kHz, 10 settings
Rotations: 10 (r/min) to 500 (r/min)/division, 4 settings
Power frequency: 50 Hz (40 to 60 Hz), 60 Hz (50 to 70 Hz)
Integration: 2 kcounts to 1 Mcounts/division between DC to 90 kHz
Pulse duty ratio: 100% f.s. between 10 Hz to 100 kHz, 1 setting
Pulse width: 500 µs to 100 ms/division between 2.5 µs to 2 sec, 6 settings
Max. allowable input: 30 V rms or 60 V DC (the maximum voltage that can be applied between input pins without causing damage),
full-scale = 20 divisions, low-pass filter: 5/500/5 k/100 kHz/OFF |
| Measurement resolution |
Frequency, power frequency, rotations, pulse width, duty ratio: 1/200 of measurement range
Pulse duty ratio: 1/2000 of measurement range |
| Response time |
10 µs + 50 ns or less (when frequency is less than 300 Hz, measuring integration or pulse width)
50 µs + 50 ns or less (when frequency is less than 300 Hz, measuring pulse duty ratio, rotation) |
| Accuracy |
Frequency: ±0.1% f.s. (for settings other than 100 kHz f.s.), ±0.7% f.s. (100 kHz f.s. setting)
Rotation: ±0.1% f.s.
Duty ratio: ±1% (10 Hz to 10 kHz), ±4% (10 kHz to 100 kHz)
Power frequency: ±0.032 Hz
Integration, pulse duty ratio: ±1% f.s. (10 Hz to 10 kHz)
Pulse width: ±0.1% f.s. |
| Other functions |
Input pull up resistance: ON/OFF (10 kW connected to 5 V)
Threshold level: -10 to +10 V variable, slope: rises and drops
Level: High, Low, Hold ON/OFF |
| Power terminal |
DIFFERENTIAL PROBE 9322 Power (the POWER CORD 9328 is required for connection) |
| Accessories |
None * The input cord is optional |
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