Safety Checks - Verity Medical NeuroTrac MyoPlus Pro Service Manual

Safety checks

Scope
This instruction defines the procedure to be followed and the criteria to be met in testing the NeuroTrac
MyoPlus Pro of Verity Medical ltd. Only qualified and trained staff will carry out the Level 1 & 2 test.
Test equipment
No Name
1 DC Power supply
2 Multimeter
3 Oscilloscope
Level 1: Output test
1. Use the fresh battery set: 4 x Alkaline or rechargeable Ni-MH AAA batteries.
Turn on the device, set any available Custom programme to CON (continuous) 100Hz, 330µS, 10 min.
2. Connect 500 Ω resistors to the lead wire pins, connect the lead wire to the device, and connect oscilloscope wires.
3. Connect the oscilloscope wires with the oscilloscope. Set the mA level of the tested unit to 90mA, read the results
from the oscilloscope and complete the table below:
Model:
Model:
Model:
Oscilloscope
wires
500 Ω
resistance
Model & serial number test of equipment used
Pulse width: 330 µS
Intensity: 45V
8
15% /500 Ω = 90mA
±
Frequency: 100Hz