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3.3.16
Input Impedance Calibration
Description
►
When an external impedance converter module is used to convert the
impedance of a device from 50 Ω to 75 Ω, some external loss can be induced.
The Input Z Cal function can be used to compensate for these losses with an
offset value.
NOTE:
Operation
►
Press
offset.
Range: 0 dB to +10 dB
Resolution: 1 dB
Display Icon
►
The AMP icon is displayed at the bottom of the screen when Input
Z Cal
0dB and Input Z is = 75 Ω.
3.3.17
Using the Built in Pre-Amplifier
Description
►
The built-in pre-amplifier boosts weak input signals, such as EMI testing
signals, to levels that are easy to handle, over the entire frequency range.
The built-in pre-amplifier on the AE-166/167 has a nominal gain of 20 dB.
In the Auto setting, the pre-amplifier will be automatically turned on when the
reference level is less than -30 dBm. When the reference level is greater than
-30 dBm, the pre-amplifier is turned off. The bypass setting turns the pre-
amplifier off.
Operation
►
Press
Range: Auto, Bypass
Display Icon
►
The Pr-amp icon indicates that the pre amplifier is on.
February 2017
The Input Z Cal function is only functional when the input
impedance is set to 75 Ω.
> More[F7] > More[F7] > Input Z Cal[F2] and set the impedance
> More[F7] > Preamp[F5] to toggle the Preamp state.
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