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SurgiStat II Service Manual
SurgiStat II Control Signal Inputs and Outputs
The following table lists the important input and output signals. From a
troubleshooting standpoint, the absence (and presence) of these signals will help
you isolate problems.
Signal Name
Description
PAD_SNS_ERROR
This is the input signal from the pad sense module that
informs the system logic that a pad sensing error has
occurred.
When a pad sense error occurs, a logic 1 (5 VDC) is
sent to the system logic section.
PAD_NSED
This is an input signal from the pad sense module that
informs the system logic that a single-plate patient
return electrode is attached to the front jack strip.
When the pad sense module senses the presence of a
single-plate patient return electrode, a logic 0 (0 VDC)
is sent to the system logic.
PAD_SED
This is an input signal from the pad sense module that
informs the system logic that a split plate patient return
electrode is attached to the patient.
When the pad sense module senses the presence of a
split-patient return electrode, a logic 0 (0 VDC) is sent
to the system logic.
AUD_DRV
This is an output signal from the system logic that
generates the activation tones for all modes of
operation.
A 1 kHz square wave is generated when the cut or
blend mode is activated. A 2 kHz square wave is
generated when the coagulation, fulguration, or bipolar
mode is activated.
This signal is used by the audio circuit.
ALM_DRV
This is an output signal from the system logic that
generates a 2 kHz / 1 kHz square wave for activating
the alarm siren.
This signal is used by the audio circuit.
AUX_RLY_DRV
This is an output signal from the system logic that
controls the accessory relay on the back panel.
TAP_SEL
This is an output signal from the system logic that
controls relays on the main board. The relays select
which secondary windings will be used from the
monopolar output transformer.
Summary of Contents for SurgiStat II
Page 1: ...Service Manual SurgiStat II Electrosurgical Generator ...
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Page 46: ...3 22 SurgiStat II Service Manual Figure 3 20 Bipolar mode waveform ...
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