Software
English, Revision 04, Date: 19.01.2015
37
5.3.2.3
(T)ime & Code
This menu offers the option setting the values for the Transponder decoding, the posi-
tion calculation and the positioning pulse.
Figure 20
Menu: (T)ime & Code
enables setting the threshold for generating the bit RX_NOISE of the system status
word as described in Table 12 on page 33 under ’Noise’.
As the Trovan technology secures the code transmission only via a simple parity
check, two additional security strategies were implemented:
1.
It is possible to verify the four highest bits via a preset value (0-F).
enables
setting this value, which then has to be programmed into the transponders
together with the code. For entries larger F, this verification is switched off.
2.
It is possible to choose the number of codes to be compared between 0 and 15
by pressing
. Input of
0
generates the immediate output of the received code,
input of
1
generates the comparison of the received code with the very last code
received just before this one, etc. Note, that this procedure reduces the maxi-
mum crossing speed, because the necessary transmission time increases
accordingly with (n+1) x 8 ms.
With
it is possible to determine the voltage threshold
S
at which the decoding is
started, in order to suppress decoding cycles with a too weak signal, and the X-posi-
tion calculation generated.
With
it is possible to determine the voltage threshold
S
at which the Y-position cal-
culation is generated.
releases the output of a positioning pulse only after the decoding of a Transponder.
In an interference laden environment this will avoid false positioning pulses. For high
speed crossing this item should be set to
0
.
S:0006 D:+005 D_Y:+32767 D_X:+32767 Code: 0000 Read: 0: N: 1
Frx[/Hz]:61280 Ftx[/Hz]:127990 CSEL: 1
U[/mV]:24200 I[/mA]: 350 T[Grd.C]:+19 S_MA: 8002 S_SL: 0000 Noise 0
(B)Level to Noise Error [0..1000]: 1000
(H)igh-Nibble of RW-Code [0..F,>F]: 10
(N)umber of equal Codes [0..15]: 1
(T)hreshold Decoding-X/Calculation [20.1023]: 256
Thr(e)shold /Calculation-Y [20.1023]: 400
PosiPulse (a)fter Decoding 1
(L)evel for Positioning [20.1023]: 500
(P)osi-Pulse Time [n*1ms]: 100
(O)ne Positioning Pulse per Crossing 0
(X) Timed Positioning Pulse 1
Th(r)eshold MAX-Detection-X [10.1023]: 400
Thre(s)hold MAX-Detection-Y [10.1023]: 400
(esc)to quit
