53
Vectra Genisys®/Intelect Legend XT®/ Intelect® Vet Therapy Systems
5 TROUBLESHOOTING
5.19 SEMG AND SEMG + ELECTRICAL
STIMULATION
TESTS
NOTE:
This test is for only the Vectra Genisys Therapy
System with properly installed sEMG.
Perform this test on all Channels with sEMG. However,
only one channel at a time can be tested with the Test
Equipment described in this section.
A. Test Equipment Required
It will be necessary to build an Attenuator
for this test.
See Figure 5.28
for schematic
of the required Attenuator.
Calibrated Audio Signal Generator, B-K
Precision, Model 3001.
Test leads for Audio Generator to
Attenuator.
NOTE:
Audio Signal Generator must produce a
sine waveform.
Known good set of sEMG Lead Wires.
B. sEMG Test Procedures
Set up Audio Signal Generator as follows:
a)
Plug the Audio Signal Generator Test
Leads into Generator SYNC Ports.
b)
Set the FREQ. RANGE Hz to X1.
c)
Turn the amplitude knob up to
maximum.
d)
Set the WAVEFORM to Sine waveform.
e)
Set the ATTEN to O.
f)
Set the FREQUENCY DIAL to 100.
g)
Turn Audio Signal Generator On.
See Figure 5.29
for b-g.
Turn System On. View Home Screen for
the presence of the sEMG and the sEMG +
Stim icons.
See Figure 5.30.
If icons are not
visible, stop test and make necessary repairs
to the sEMG Module and System.
1.
2.
3.
4.
1.
1.
FIGURE 5.30
FIGURE 5.29
FIGURE 5.28
100K 1%
100K 1%
49.9 OHM 1%
49.9 OHM 1%
RED
GREEN
BLACK
TO AUDIO WAVEFORM
GENERATOR
TO SEMG LEAD WIRES
ATTENUATOR SCHEMATIC
SET FREQUENCY RANGE
HZ TO X1
AMPLITUDE TO
MAXIMUM
FREQUENCY
DIAL TO 100
TEST LEADS TO
SYNC PORTS
ATTEN TO 0
WAVEFORM
TO SINE
SEMG AND SEMG + STIM ICONS
RED
BLACK
