Service manual

Neurodiagnostic Instruments Service Manual
3 - 54 Revision 2/18/05
VikingSelect Electrical Stimulator
System
The electrical stimulator functional units are:
• SC-1 Stimulus Controller
• VikingSelect Control Panel
• IES-2 Electrical Stimulator Module
• IES-16 Electrical Stimulator Module
• Electrical Stimulator Probes
• Connecting Cables
SC-1 Stimulus Controller
The SC-1 Stimulus Controller receives instructions
from the host computer via a FireWire interface and
communicates with the electrical stimulators over an
AES serial link.
VikingSelect Control Panel
The VikingSelect Control Panel controls the Stimulus
Intensity in the Console mode of operation.
IES-2 Clinical Electrical Stimulator
The IES-2 is a single module with two independent
channels of isolated electrical stimulation. Each channel
has a seven pin din connector for a S403 stim probe and
a pair of DIN 42 802 electrode outputs.
The IES-2 Clinical Electrical Stimulators receives
parameter instructions and a stimulus pulse from the
SC-1 Stimulus Controller. This unit produces the high
voltage, isolated electrical stimulus pulses that are
delivered to the patient Each channel is capable of
delivering a constant voltage level of 1 to 400V, or a
constant current level of .1 to 100mA, up to a maximum
pulse duration of 1msec.
IES-16 O.R. Electrical Stimulator
The IES-16 is a single module with two independent
channels of isolated electrical stimulation. Each
independent channel has eight DIN 42 802 electrode
pair outputs. Only one electrode pair, from each
channel, is active at a time. The system's software will
control which output pair is active. There are no
connectors for S403 probe output.
Dual Stimulator Capability
The VikingSelect allows two electrical stimulators to be
connected to a single system:
• an IES -2 and IES-16
The IES-16 Stimulator has an external address switch
that defines its stimulator channels as E1/E2 or E3/E4.
For an IES-2 and IES-16 combination, the IES-16 must
be set for E3/E4. The IES-2 Stimulator is hard-wired as
E1/E2.
The VikingSelect application automatically selects the
appropriate amplifier and stimulator for the test being
conducted.
Stimulus Probes
Either S-402 or S-403 Stimulus Probes may be used
with the IES-2 Stimulator. The S-402 works only in the
Console mode.
Testing
The FireWire Diagnostics for the VikingSelect are the
primary tool for testing and troubleshooting the
electrical stimulator functional units. Refer to Chapter 6:
Troubleshooting for detailed instructions on using the
diagnostics.
SM403 Stimulus Probe
SM-402 Stimulus Probe