Service Manual NeuroLight / AlgiScan - Rev B
6
Maintenance operations specific to the AlgiScan
a. Hardware part control
- Check the condition of the LEMO connector (see LEMO connector change section)
b. Functionals controls
- Check the 60mA pulses generated by the AlgiScan using the 4K test impedance (see detail here
after)
Necessary accessories:
- An oscilloscope
- An impedance 4K pulse test (IMPtest)
- The sheet final test ENR/13/20-D
Detail regarding the control of 60mA pulses generated by AlgiScan:
1) Necessary material
- AlgiScan to test
- 1 CAB-STIM3
- 1 oscill probe
- 1 impedance 4K test card
- 1 «Pupil Target» card
- The rigid eyecup specific for test
Rigid eyecup
«Pupil Target» card
Impedance 4K
test card
2) Oscilloscope setting
- 50μs/Div
- 1V/Div
Note: Here, 1V/Div corresponds to 10mA/Div. The expected result is between 5.4V and 6.6V, i.e.
between 54mA and 66mA.
3) Wiring
- Connect the probe to channel 1 of the oscilloscope.
- Connect the end of the probe to the impedance card on the small + pin and the clamp on the small
pin.
- Connect the clamps of the CAB-STIM3 to the impedance card, red on + and black on -.
- Connect the CAB-STIM3 to the AlgiScan
