DGP000814AAA
2-01
7-2
Calibration
GSS6100 and SimCHAN user manual©
Spirent Communications Plc 2005 - 2007
7.1.2 Power
level
calibration
This requires an RF power meter capable of measuring a frequency of
1.57542 GHz and power levels between –50 dBm and –60 dBm, for
example an HP E4418B. Ensure that the power meter is calibrated according
to the manufacturer’s instructions, including any adjustments for sensor
calibration factor and frequency.
a)
Turn on the GSS6100.
b)
Remove the 50 ohm termination from the MON / CAL port
connector on the rear panel of the unit. Retain for later
replacement.
c)
Attach the RF power meter to the MON/CAL port.
d)
Allow 15 minutes for the GSS6100 to stabilise.
e)
Remove the ‘Calibration Void if Broken’ label covering from
the IF Level Cal adjustment port.
f)
Select the menu item
Options-Power Calibration
.
g)
Follow the on-screen prompts.
First, SimCHAN sets up a calibration signal on the rear panel
MON/CAL port
SimCHAN then calculates and displays the power level you
must set at the MON / CAL port.
h)
Adjust the IF Level Cal potentiometer to get this power level at
the MON / CAL port.
i)
You must set this power level to within ±0.05 dB.
j)
Re-cover the IF Level Cal adjustment port with an appropriate
calibration label.
k)
Remove the RF power meter from the MON / CAL port.
l)
Replace the 50 ohm termination on the MON / CAL port.
This concludes power level calibration.
