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Introduction
SIM999 is a handheld portable tester for Doppler speed log，transducer
and NMEA0183 (IEC61162-1).
Doppler speed log tester
SIM999 can measure the output of a Doppler speed log, and if required,
reply with a user defined signal to simulate operation of the transducer.
NMEA0183 tester
SIM999 receives and displays the NMEA0183 signal.
Features
◆Doppler speed log simulator & transducer tester & NMEA0183 tester
◆Connect with PC and used in Doppler log teaching system
◆Built-in rechargeable battery
◆Big screen green with black words on LCD display
Functions
Doppler speed log simulator
Test the transmitting frequency, transmitting pulse width and transmitting
amplitude of the speed log. Simulate the operation of the speed log
transducer to send navigation signal, including speed, step time and
frequency set by users to speed log, which is used for the installation,
debugging and trouble removal.
Transducer tester
Measure the impedance and phase angle of transducer under the set
frequency by users and calculate the resonant frequency, resonant
frequency and resonant phase angle. Compare with the resonant
parameters to determine whether the transducer can work normally.
