The Front Panel Controls And Indicators; Section 2 - Functional Description - Welch Allyn Grason-Stadler GSI 17 Series Service Manual

This section of
Connectors,
Controls,
Figure 2-l for the layout and positioning of
Controls, and Indicators.
2.1
THE FRONT PANEL CONTROLS AND INDICATORS (FIGURE 2-1)
F1 - Power switch and indicators for ON
F2 - Range
increase
standard
operation is indicated by the "+" being lit on the
LCD.
F3 - HL control for setting stimulus
Level indicated on LCD.
F4 - Present Bar for stimulus presentation.
F5 - Loudspeaker
presentation indicated by illuminated LED.
F6 - Subject response indicator LED shows the operator
that the test subject has pressed the handswitch
button.
F7 - Frequency
Frequency indicated in window adjacent to control.
F8 - Routing
the
indicated by illustration of
F9 - Tone
type.
FM
---
F10 - Low battery indicator to alert the
the
available
depending
are used).
S E C T I O N 2
Functional Description
the Service Manual is
and Indicators of the GSI 17.
extension pushbutton allows
the stimulus intensity 10 dB
maximum
in operation
control for setting stimulus
switch for routing the stimulus signal to
left or
right
switch for setting
type
= warble tone
= steady tone
= pulsed tone
batteries
have a
(recharge or
on whether NiCad or
used to
all
HL at
frequency -
any
intensity
as such.
earphone.
Left or
subject.
the
limited
operating
replace
batteries
alkaline
describe
the
Refer to
Connectors,
and OFF (0).
operator to
above the
its
level.
Actual
frequency.
right
stimulus
tone
operator
when
time
soon,
batteries