Model 9600 Accutach
Measures & displays tachometer output frequency in Hz, RPM or %RPM
The Accutach is a versatile hand-held, battery operated instrument that can be used in a wide variety of aircraft measurement and calibration applications.
The following examples show its versatility:
- Measure the rotation of a turbine rated at 12,000 RPM at 100% that drives a 70Hz tach generator at 100%.
- Measure the speed of a rotor system rated at 450 RPM at 100% using a magnetic pickup with three single interrupters and one double interrupter.
- Measure propeller RPM using the 1-per-rev pulse from a synchrophasor.
The Model 9600 features a microprocessor that measures input signal period, computes the frequency, controls the display, monitors the keyboard, and stores settings. The keyboard consists of a power ON key, RESET key, display LIGHT key, display CONTRAST control, and four MODE keys for data entry and access to the software menu.
A CHANNEL knob is provide to select up to four input signals from connector J1 or a single input signal from connector J2.
Specifications
| Display | 1 Line by 16 Character Liquid Crystal Display, Backlighted |
| Input Frequency Range | 100 to 100,000 PRM, (1.6 to 1600 Hz) |
| Accuracy | 0.1% +/- 1 Count |
| Display Update Period | 0.6 second, nomial |
| Averaging | Exponential Weighing |
| Input Signal Type | Tach Generator, Magnetic Pickup, TTL |
| Maximum Input Signal | 150 V peak AC |
| Minimum Input Signal | 0.5 V peak |
| Input Selection | Four inputs from (J1), and one input from (J2) |
| Battery | Four AA size alkaline cells |
| Battery Life | 75 hours, nominal (Operating), 1 Year, nominal (Off) |
| Auto Shut-Off | Powers down after two minutes with no input signal, to save batteries |
| Low Battery Indicator | A warning message is displayed if battery voltage drops below 4 Volts, nominal |
| Operating Temperature | 0 to 50 Degrees C |
| Chassis Dimensions | 7.7" x 3.9" x 1.6" (excluding connectors, knob) (19.6cm x 9.9cm x 4cm) |
| Weight | 1.5 lbs (.68 kg) nominal (including batteries) |
| Finish | Ground support equipment yellow textured paint |
| EMI | Meets MIL-STD-461B |