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DGP01448AAA
GSS7725 Interference Generator User Manual
© Spirent Communications plc 2002-2017
5-9
Reference level
Type the reference level you want to use.
Default -130 dBm
Note
: In Interference Fixed Level Mode and GPS Fixed Level Mode, when
you set Reference Level equal to the GPS received signal Reference Level,
the data entered in Level directly equates to the J/S ratio.
Interferer Delta level
Note: Delta
level does not specify an absolute interferer signal level, only the value by which the
current level is incremented or decremented.
Use this command see Figure 14, to specify an Increment (in dB) in interferer signal level at the
Action time you enter.
Figure 14 Command type – Interfere Delta level
Action time
Set the days and time into the scenario you want to apply the Command type
Vehicle
Antenna
Vehicle number for the command, default 1
Antenna number for the command, default 1
Channel
The interference channel number, default: 1
Increment
Type the amount by which you want to increment the interferer signal level
from the value set in a previous command.
Range: 0 to 110
Step size: 1 dB
Operating mode with a User actions file and an interference file
See reference a) for details on the User actions file.
Table 5-1 details the mode of operation if a User action file (
*.act
) and an interference file (
*.itf
) are
present in a scenario.
Table 5-1 Mode of operation with a user action file and an interference file
User action file
(*.act)
Interference file
(*.itf)
Mode of operation
none
none
Interactive interference mode
none
present
Replays the interference file commands
