
Model 971-3D Digital
Tachometer tester
Our newly-introduced Model 971-3D Triple
Digital Tachometer Tester
combines circuitry equivalent to three
Model 971-2 testers and provides the
same precision. Housed in a rugged 19"
rack-mount enclosure, it features
forced-air cooling for total reliability.
Basic Capabilities and
Specifications
- Use for functional test or
calibration in the aircraft or on the lab bench
- Can be used to test triple
tachometers, such as used in helicopters
- User-selectable RPM
auto-sweep mode for diagnostic testing
- 100 to 9,000 RPM range, in 1
RPM steps
- Accuracy of ± 0.1 RPM,
or ± 1 PPS
- Dual-mode operation supports
both 2-pole and 4-pole tachometers
- PPM, PPS digital outputs
(TTL/VSRC) for pulse tachometers and flowmeters
- 5,12,24 volt 0.6amp (current
limited) dc outputs/ for each channel
Safety Features
- Overload protection on all
outputs
- Over-temperature protection
- Fused 115 VAC 60 Hz
Model 971-3 Additional Info
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