Grason-Stadler GSI
®
61 CLINICAL AUDIOMETER
The Message “CAL”
The calibration for the GSI 61 is stored in the system’s memory, and this data is continually
monitored. If an error should be found in the calibration memory, the message “CAL” is
displayed in the appropriate channel’s intensity area. “CAL” is displayed as long as the
faulted transducer and stimulus combination is selected. The channel is forced into an off
condition and cannot be turned on until a new stimulus and transducer combination is selected.
When the message “CAL” appears in either Channel 1 or Channel 2, note the specific
combination selected. Try the same combination on the alternate channel. Or power
down and power up to attempt to clear the fault. Should “CAL” continue to be
displayed, contact a service representative and report the specific combinations and
conditions used.
The Message “Help”
Should the message “Help” appear in the message area of the display, the GSI 61 will enter a
lock out mode which will disable all front panel operations. In addition to the message “Help,”
code numbers will appear. These numbers are important as they indicate the possible source
of the problem.
Note: It is extremely important to record these numbers.
Reset the GSI 61 by turning off the power, waiting 30 seconds, then turning it on. Should
“Help” continue to be displayed, contact a service representative and report the specific
conditions used.
Line Voltage Brownout and Interruptions
The GSI 61 is designed to protect against abnormal AC power conditions by returning to the
power-up initialization settings; thereby protecting the unit against unwanted conditions at
the transducers. This will automatically occur when interference is not too severe. However,
under extreme conditions the GSI 61 will enter a lockout mode which will not permit front panel
operations
. This can be rectified by simply powering down for approximately thirty seconds
and then restarting operation.
5-6
1761-0100 Rev. B
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