General Operation 33
2.3.8 Explaining the Settings in the Resets Default Settings Menu
The Resets Default Settings lets you set up your own default source levels. To
reach it, press [MENU] from the Opening screen and then push [NEXT] twice.
Coupler:
CRV #1-4 SRC LEVEL: Set the default source level for curves 1-4 in the Coupler
Multicurve, Coupler Target, and Coupler EarSim screens.
STD/AGC/ADAPT PREDELAY/SETTLE: Set the default delays for each aid type
and delay type displayed.
Real-Ear:
CRV #1-4 SRC LEVEL: Set the default source levels for the AIDED 1, 2, 3, and
UNAIDED curves, respectively, in the real-ear measurement screens.
STD/AGC/ADAPT PREDELAY/SETTLE: Set the default delays for each aid type
and delay type displayed.
2.4 Aid Types and Delay Times
The AID GROUP setting automatically changes the delays used in most mea-
surements. These delays give the hearing aid time to adjust to the test signal
before a measurement is taken. Without adequate delays built into the test, mea-
surements can be inaccurate.
When the AID GROUP is set to STANDARD, minimal delays are used with
each test. When the AID GROUP is set to AGC, the delay timings are increased.
The ADAPTIVE setting uses longer delays than the AGC. The AID GROUP set-
ting is available in the local menu of each measurement screen.
When the USER LEVEL setting is set to ADVANCED (see Section 2.3.2), the
user can further finetune the delays used in each test. There are three different
delay settings. They are located in the advanced menu of each screen (the USER
LEVEL setting must be set to ADVANCED).
• ThePREDELAY time is the amount of time the FP35 analyzer presents
the first tone in a test. The tests that the predelay setting affects are fre-
quency sweeps, FOG measurements in the automated test sequences, ref-
erence test gain measurements (automated test sequences), harmonic and
intermodulation distortion measurements, and equivalent input noise
measurements.
• TheSHORT SETTLE time is the amount of time each frequency in a
pure-tone sweep is presented before a measurement is made, and the
additional delay to the “on” time in a digital speech signal. It is also used
in intermodulation distortion sweeps.
