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Notes:
Return Loss & Cable Loss:
Limit should be sent as ( dB * 1000 )
Maximum value sent is 60000 which represents 60.00 dB
Minimum value sent is 0 which represents 0.0 dB
SWR:
Limit is in thousandths (of ratio), so it should be sent as ( ratio * 1000 )
Maximum value sent is 65530 which represents 65.53
Minimum value sent is 1000 which represents 1.00
Set DTF Parameter – Control Byte #7 (07h)
Description: Sets Distance to Fault parameters.
Be aware using this control byte. The distance to fault parameters are all inter-related. Consequently, the control byte must
change all of those parameters at the same time to properly set them.
Enter Start and Stop distances in hundred-thousandths of a meter or foot (12.34m would be sent as 1234000).
Relative Propagation Velocity is in hundred-thousandths (a Relative Propagation Velocity of 0.850 will be sent as 85000).
Cable Loss is in hundred-thousandths of dB/m or dB/ft (–0.345 dB/m would be sent as 34500).
See control byte #29 (1Dh) response bytes 130-137 (Distance), 150-157 (Propagation Velocity & Cable Loss) for current Site
Master configuration.
Bytes to Follow: 16 bytes
1) Start Distance (highest byte)
2) Start Distance
3) Start Distance
4) Start Distance (lowest byte)
5) Stop Distance (highest byte)
6) Stop Distance
7) Stop Distance
8) Stop Distance (lowest byte)
9) Relative Propagation Velocity (highest byte)
10) Relative Propagation Velocity
11) Relative Propagation Velocity
12) Relative Propagation Velocity (lowest byte)
13) Cable Loss (highest byte)
14) Cable Loss
15) Cable Loss
16) Cable Loss (lowest byte)
Site Master Returns: 1 byte
1) 255 (FFh) Operation Complete Byte
224 (E0h) Parameter Error : Parameter(s) out of range
238 (EEh) Time-out Error
10 Site Master PM