Programmer DT05
7
7) Instruction HA scanner in
Programmer DT05
The HA scanner is used for detecting how much inter-
ference there is from a hearing aid, within the frequency
band that the Receiver DT10 is operating in.
How to use the scanner:
1. Enter Setting in the menu of the Programmer
DT05 to activate the scanner.
2. Make sure that the hearing aid is on and that the
Receiver DT10 is NOT attached.
3. Place the hearing aid close to the Programmer
DT05 (see picture to the right) and find the position
where the interference is worst.
How to read the scanner:
The scanner reads and draws the RSSI-value on the
frequencies between 904 and 927 MHz. (RSSI = Received
Signal Strength Indicator)
The white horizental line indicates an average value of
RSSI over the whole frequency range.
Use the graduation bar to the right to determine how
strong the interference is. If the level of interference
is above the green field, the Receiver DT10’s ability to
receive the signal from the transmitter will be reduced.
To facilitate the reading you can press the pairing button
for 3 seconds. Then the drawing will freeze. Just press
the button again to restart the scanning.
RSSI graph
Lower
frequency
Upper
frequency
RSSI average
value over the
whole frequen-
cy range
Graduation of
interference
Reading of specific frequencies:
If you move the menu control up or down a marker
(vertical line) will appear. This is to make a more precise
reading of a specific frequency. Press the pairing button
briefly to remove the marker.
RSSI at
the marker
Frequency at
the marker
Marker
