Doc# 0296-0018 • REV R (July 2017) Page 7 of 61
Capabilies (connued)
Phase
During sensivity calculaon when the transducer selected is an acelerometer, the unit
displays the phase of the “transducer under test” relave to the internal reference acceler-
ometer.
Automac Mass Load Correcon
A special algorithm is used to automacally adjust measurements and calculaons to com-
pensate for the mass load of the transducer under test.
Help Screens
Help screens are provided during operaon to assist the operator.
Large Memory
Test parameters, test results and other test data can be stored in memory for future down
load via the printer. Informaon will be retained even though the TTS is turned o.
Printer
The TTS features a built-in thermal printer, which is used to hard copy data stored in memory.
Automac Date/ Time
A built-in real me clock displays date/me and automacally stamps hard copy print outs.
Baery Powered
Power is provided by two gel cell type baeries. The two baeries are charged via two built-
in charging systems that use a 110 VAC 50/60 Hz source. The user can use the TTS while the
baeries are being charged. 220 VAC is oponal.
ICP Accelerometers
Selectable current sources (.5 mA, 2 mA, 2.5 mA, 4 mA, 4.5 mA, 6 mA) are provided to power
ICP accelerometers.
Reference Accelerometer Output
A 50 mV/g, low impedance ( ~ 100 Ohms) reference accelerometer output signal is provided.
Automac Power Management
A power management and supervisory system is used to opmize power consumpon,
increasing the me between required charging. The instrument will automacally
turn o at the lowest acceptable voltage to ensure the baeries are not subjected to deep
discharge which can greatly reduce their operaonal life.
Automac Monitoring and Supervisory Limits
1. Warning - When test amplitude and/or frequency are out of acceptable ranges, the
operator is warned of the condion with ashing displays.
2. Shutdown - to prevent damage to the shaker, the TTS is automacally shut down when
maximum acceptable displacement limits are exceeded (approximately .125 inch P-P dis-
placement).
Principles of Operaon
The HI 803 Transducer Test Set is comprised of a Signal Generator, Power Amplier, Electro
dynamic Vibrator, Reference Accelerometer, Digital Voltmeter, Microcomputer and Digital
Indicator.