Instrument Functions
R&S
®
FSVA/FSV
535Operating Manual 1176.7510.02 ─ 09
Auto ID Threshold ← External Mixer
Allows the maximum permissible level difference between test sweep and reference
sweep to be corrected during automatic comparison (Auto ID function). The input
range is between 0.1 dB and 100 dB. Values of about 10 dB (i.e. default setting) gener-
ally yield satisfactory results. See also Chapter 3.8.1.5, "Remarks on Signal Identifica-
tion with Auto ID", on page 521.
Remote command:
[SENSe:]MIXer:THReshold on page 829
3.8.3 Introductory Example of Operation
The following example gives an example of the operation of external mixers as well as
the required settings: A sine wave signal with f = 14.5 GHz is applied to the input of a
multiplier. The spectrum at the multiplier output is to be recorded in the range of 52 to
60 GHz using a 2-port mixer for the V band. The mixer used is a double-diode mixer.
The example of operation is described in the following steps:
●
Test Setup
●
Activating the External Mixer and Selecting the Mode
●
Default Settings
●
Level Correction
●
Frequency-dependant Level Correction
●
Level Correction with an Average Value
●
Taking into Account the Cable Loss in the IF Path
●
Functions for Signal Identification
Instrument Functions – External Mixer (Option R&S FSV-B21)
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