Operating Manual HG G-98830YA | English, Revision 02 | Date: 21.06.2021
61
Configuration of the System via the Service Interface – Chapter 10
Figure 27
Menu: (F)requency & Antenna Tuning
Setting the receive frequency
The receive frequency F
rx
to be set is calculated with F
ZF
= 455 kHz and the band
-
width B = 5.5 kHz according to the following equation:
Figure 28
Equation: Calculation of the receive frequency for the upper and lower sidebands
Since the transponder antenna is a device with single sideband reception, you must
set 1553000 Hz for the lower sideband and 1575000 Hz for the upper sideband ac
-
cording to this equation (see chapter 8 „Commissioning“ on page 31).
Value range:
0 … 1600000
Values between 0 and 1600000 are mainly important for internal test purposes. In
practice, 1553000 Hz or 1575000 Hz have proven to be optimal.
To set the receive frequency:
Press the button
and enter the desired value.
Activating Autotuning
With the parameter
A(u)totune
you activate autotuning. After activation, this func
-
tion is immediately executed once. This process takes approx. 16 sec. After that, the
transmitter circuit is also re-tuned after each power-on. Subsequently, the tuning is
checked every 10 sec. during operation (if there is no transponder in the field) and
retuned if necessary.
Selection:
0 = Auto tuning is deactivated.
1 = Auto tuning is activated.
To set auto tuning:
Press the key
and enter the desired value.
S:0006 D:+006 D_X:+32767 D_Y:+32767 Code: 00000001 Read: 73:
N: 0
Frx[/Hz]:66800 Ftx[/Hz]:128000 Csel:1
U[/mV]:23100 I[/mA]: 530 T[Grd.C]:+24 E: 0002 Noise 0
(R)x_Frequency [/Hz]: 1553000 ( 66750 Hz)
A(u)to-Tune 0
(A)ntenna-Tuning [0..15,+,-]: 4
switch (T)ransmitter: 1
(Q)uit Menue
F
rx
4
F
ZF
64 kHz
±
–
B2-
=
