Welch Allyn TM 262 Auto Tymp - User Manual - Manual (Page 52)

TM 262
3-18 Revised 4/11/08
c. Programming ipsilateral acoustic reflex test frequencies
As mentioned earlier, the instrument defaults to a 1000 Hz test stimulus when the TYMP
REFLEX button is first pressed after receipt from the factory. However, any combination of
the four available frequencies (500, 1000, 2000, 4000 Hz) can be selected either temporarily or
as revised default parameters. To temporarily modify the default condition:
1. Press the Tymp Reflex button.
2. Select the desired frequencies by selecting or deselecting the appropriate frequency
buttons after. In this way, the actual test stimuli presented will be determined by the
frequency pushbuttons selected prior to beginning a test i.e., sealing the ear canal.
Each frequency selected will be indicated on the display as it is chosen. For example, if
2000 Hz is selected along with 1000 Hz, the label I 1000 will appear at the top of the first
column of numbers for reflex and I 2000 will appear directly below it. If 500 is also
selected, the screen will be modified so that I 500 appears at the top of the first column of
reflex numbers, I 1000 will appear directly below I 500 and I 2000 will appear at the top of
the second column of reflex numbers and directly to the right of I 500 and so on.
NOTE: There is a very definite pattern to the way in which these frequencies are positioned
on the screen; namely, the lowest frequency will be placed at the top of the first column for
reflex results followed by the next lowest frequency. If more than two frequencies are selected,
the third and fourth frequencies will be placed in the second column for reflex results in a ow to
higher frequency order.
To change the default frequencies for the Tymp Reflex mode:
1. Select the desired frequencies as described above.
2. Once you have reviewed them and are certain that they are the desired parameters, press
the M+ pushbutton. Note that the word SAVED appears on the display screen. Now every
time that you re-enter the Tymp Reflex mode, these revised default parameters will be
selected automatically. As mentioned above, it will still be possible to temporarily alter the
frequencies selected by choosing the desired frequencies. However, in this case each time
that the Tymp and Reflex test mode is exited and re-entered, the default parameters will
reappear. There is no limit to the number of times that the default frequencies can be
modified. It is a good practice to keep a record of the reflex default frequencies.
Exit tympanometry/reflex
To exit Tymp Only Mode:
1. Select Tymp Reflex or Audiometry Mode. Note that the appropriate screen appears on
the display.
To exit Tymp/Reflex Mode:
1. Select Tymp or Audiometry Mode. Note that the appropriate screen appears on the
display.