Spectracom GSG-5 series, User Manual With Scpi Manual

Page: 313 / 378

Parameters
The Clock Model is described by the following parameters:
Table 6-1:
Clock Model parameters
Parameter Unit Range Description
t
0
s >0 Scenario elapsed time when parameters a
0
, a
1
and a
2
were measured.
When t
0
is set, its value must be within ±10 seconds compared to the current
elapsed scenario time.
a
0
m ±10000 Clock bias measured at t
0
.
a
1
m/s ±100 Clock drift at t
0
.
a
2
m/s² ±10 Rate of clock drift.
At the time t , the clock offset is then calculated as follows:
Δ
t
= t – t
0
bias (meters) = a
0
+
Δ
t
( a
1
+ 0.5 *
Δ
t
* a
2
)
Note
SOURce:CLKMDL commands are accepted only while a scenario is running.
Example
SOUR:SCEN:CLKMDL 10.000000,2000.000000,-10.000000,0.000000
6.3.3.95 SOURce:SCENario:CLKMDL?
Note: This SCPI command is only supported if the Spoofing Range Option is
installed (OPT- SPF license, see "GSG Series Model Variants and Options" on
page 194 .)
Function
The Clock Model command is used in the context of simulating the spoofing of drone equip
ment.
This command is used to query the Clock Model state and its parameters t, bias, t
0
, a
0
, a
1
,
and a
2
. See also: "SOURce:SCENario:CLKMDL" on the previous page.
Command Syntax
SOURce:SCENario:CLKMDL?
6.3 Command Reference
CHAPTER
6
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User Manual GSG-5/6 Series Rev. 26
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