Chattanooga Group TRITON 2841, Руководство по обслуживанию

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Triton® Traction Unit
5.16 sEMG TESTS
This test is to be performed on the Triton Traction
unit only with the sEMG Module properly installed.
Perform this test on all Channels with sEMG.
A. Test Equipment Required
It will be necessary to build an Attenuator
for this test. See Figure 5.34 for schematic
of the required Attenuator. The Attenuator
must be contained in shielded enclosure.
Input connection and output connections
should be separated from each other as
far as possible within the confines of the
shielded enclosure.
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 sEMG Lead Wires.
B. sEMG Test Procedures
Figure 5.35 depicts the controls of the
Audio Signal Generator. 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.
Turn Triton On. View Home Screen for the
presence of the sEMG icon. See Figure 5.36.
If icon is grey, stop test and make necessary
repairs to the sEMG Module and System.
a) Make certain sEMG Module is completely
seated in unit.
b) Replace sEMG Module with a known
good sEMG Module. Refer to 6.15 sEMG
Module Removal and Replacement.
1.
2.
3.
4.
1.
2.
FIGURE 5.36
FIGURE 5.35
FIGURE 5.34
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 ICON
RED
BLACK
5 TROUBLESHOOTING