The S-Value - ABB ETL600 Instruction Manual

ABB Switzerland Ltd
Table 5-1 lists the peak envelope system levels [dBm0 PE] and their
associated weights for ETL600. It also gives the PE to mean level
difference. All entries except "NSD600 test command signal" and
"MOD600" must appear also in the signal selection dialog box for
O4LE teleoperation ports of HMI600.
Types of AF signals
Speech with 3 dB safety margin
VFT channels and modems
50 Bd or
100 Bd channel
200 or 300 Bd channel
600 Bd channel
1200 Bd-above-speech
channel
1200 Bd-V.23 channel
NSK5 2400 Bd channel
NSK600 2400 bps channel
NSK600 4800 bps channel
NSK600 9600 bps channel
Pilot tone not used as NSD600
guard signal or default
NSD570/NSD70C guard signal
Pilot tone used as NSD600
guard or
NSD600-own-guard
AMX500 2 kHz
AMX500 4 kHz
4)
MOD600
Table 5-1
Remarks:
1) For single channel equipment with 2400 Bd VFT channels or with 1200 Bd-V.23
channels operated in stand alone mode (no speech or other low speed VFT
channels being used) the weighting factor can be raised to 2 in order to fully exploit
the available transmit power.
2) If in a single channel equipment a 1200 Bd-V.23 channel is operated in parallel
with other low speed VFT channels, the weighting factor 1 (as for 1200 Bd V.23
operation in dual-channel equipment) has to be used.
3) Refer to section 5.2.13.
4) Refer to section 5.2.12.
5.2.11.

The S-value

The sum of the weights w
over the link is called "S-value":
5-8
1KHW001489-EN
System level
[dBm0 PE]
1) 2)
1)
20*log(W
3)
20*log(W
System levels and associated weights
of all individual signals to be transmitted
i
November 2005
Weight
+3 1.41
-12 0.25
-9 0.35
-3 0.71
-3 0.71
0 1.0
0 1.0
-3 0.7
+3 1.4
+9 2.8
-6 0.5
) W
NSD600guard NSD600guard
+3 1.4
+9 2.8
) W
MOD600 MOD600
Configuration and Set-up
ETL600
Level
difference
PE to mean
[dB]
3
2
2
2
1.5
1.5
1.5
10
10
10
0
0
10
10
10