Welch Allyn GSI 38, Service Manual

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Fll
F13
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F22
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F25
F26
F27
< and > Hz:
Selecting < causes the cursor to move the next lower frequency;
selecting > causes the cursor to move to the next higher frequency.
Present Bar:
Push downward to present test signal to appropriate earphone;
release to turn test tone off.
Prog(ram):
press to select Program mode screen which lists setting available
to reflex presentation format, printout header format, audiogram vs. tabular
format, display normal box, and identify frequency range for Audiometry mode.
Aud(iometry):
press to select Audiometry mode. (Available in Versions 3 & 4
only).
TYMP : press to select Tympanometry only mode.
Tymp Reflex:
press select Tympanometty and Reflex mode.
R:
used to identify right ear under test so that data stored in memory and/or
printed is properly identified; for Versions 3 and 4, used to select right earphone
for audiometry.
L: used to identify left ear under test so that data stored in memory and/or
printed is properly identified: for Versions 3 and 4, used to select left earphone
for audiometry.
IPSI: used to select an ipsilateral reflex test.
CONTRA: used t o select a contralateral reflex test (available with Versions 2
and 3 only).
500: selects 500 as a stimulus during reflex testing.
1000: selects 1000 Hz as a stimulus during reflex testing.
2000: selects 2000 Hz as a stimulus during
reflex
testing.
4000: selects 4000 Hz
as
a stimulus during reflex testing.
PAGE:
used to scroll through test results stored in memory.
M-: used to erase currently displayed page of data from memory.
M - : used to erase all pages of data from memory.
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