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All timers in ms unless stated otherwise
* Timers in Reciver Code
Low Level = 0
*
0 .5
0
Noise = 1
100 us
*
10
HF=1
UB/POTT Trip
LF=1
DTT Trip
CF=1
Guard
100 us
*
40
Figure 2–6. FSK: 3-Frequency Logic Diagram.
May 2012
CB1
Noise = 1
Pre-Trip TImer
N
0
LR Trip
N=0 to 30
1 ms increments
LR Guard
Low Level Delay
N
0
N=0 to 100
1 ms increments
Good Channel
DTT CB
Pre-Trip TImer
N
0
DTT Trip
N=0 to 30
1 ms increments
DTT Guard
Trip Hold Timer
Guard before Trip
0
Timer
N
120
N=0 to 100
0
1 ms increments
Guard Hold Timer
Trip After Guard
0
Window Timer
N
120
N=0 to 100
0
1 ms increments
Low Level = 0
VCC
PR
O
Unblock Timer
Q
CLK
Q
CL
0
N
N=0 to 500
Guard before Trip
1 ms increments
0=Disabled
Not Required
Required
Required with
Override
Trip Hold Timer
Guard before Trip
0
Timer
N
120
N=0 to 100
0
1 ms increments
Guard Hold Timer
Trip After Guard
0
Window Timer
N
120
N=0 to 100
0
1 ms increments
Guard before Trip
Not Required
Required
Required with
Override
Chapter 2. Product Description
GBT Override
Timer
LR Trip
1000
0
GBT Restore Timer
LR Guard
200
0
SOE
"UNBLOCK Trip"
GBT Override
Timer
DTT Trip
1000
0
GBT Restore Timer
DTT Guard
200
0
Page 2–23
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Troubleshooting
