Frye FONIX 7000 - Manual (Page 50)

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FONIX 7000 Hearing Aid Analyzer
2.3.2.6 Digital Speech technical details
The digital speech signal works by turning the composite signal on for a set
period of time, taking a measurement, turning the signal off for a random
period of time, and turning the signal back on again. This sequence is repeated
until the test ends.
The signal “on” time takes a minimum of 60 milliseconds. This includes the
time to turn the signal on, take the measurement, and turn the signal off. Some
aids may require an additional delay before the measurement is taken in order
to allow their circuits to settle. This additional delay time can be changed in
the MISC MEAS delay setting that is available in the local menu of the mea-
surement screens and in the Setup Menu. The MISC MEAS setting is automati-
cally adjusted according to the aid type selected. This setting is added to the 60
ms minimum measurement time.
The default settings are:
STANDARD (linear): 20 ms
AGC: 100 ms
ADAPTIVE: 2000 ms
The signal “off” time is random between 100 and 300 milliseconds. This time is
not controllable by the user.
2.4 Printing
The 7000 test system comes equipped with an internal thermal printer. The
thermal printer prints a clear, easy-to-read image of the display. You can also
hook up an external printer to print your results on normal office paper. You
can use any external printer that supports HP PCL (Hewlett Packard Printer
Computer Language) version 3.0 or the Epson ESC/P2 printer language.
2.4.1 Choosing a printer
You can set which printer to use in any local menu. (If you want to set the
printer language or whether to print in color or black & white, you will need
to use the Setup menu, shown in the next set of instructions.) To choose the
printer in the local menu:
1. Press [MENU] from any measurement screen to open a local menu.
2. Use [∨, ∧] to select Printer under Misc Settings. (You can use the [START]
button to skip ahead sections in the local menu.)
3. Use [>] to make your printer selection (INTERNAL or EXTERNAL).
4. Press [EXIT] to return to the measurement screen.