R&S FSW Series, Руководство пользователя

Страница: 425 / 1450

Common Measurement Settings
R&S
®
FSW
425 User Manual 1173.9411.02 ─ 43
Bias Value
Define the bias current for each range, which is required to set the mixer to its optimum
operating point. It corresponds to the short-circuit current. The bias current can range
from -10 mA to 10 mA. The actual bias current is lower because of the forward voltage
of the mixer diode(s).
Tip : The trace in the currently active result display (if applicable) is adapted to the set-
tings immediately so you can check the results.
To store the bias setting in the currently selected conversion loss table, select the Write
to CVL table button.
Remote command:
[SENSe:]MIXer<x>:BIAS[:LOW]
on page 1075
[SENSe:]MIXer<x>:BIAS:HIGH
on page 1075
Write to CVL table ← Bias Value
Stores the bias setting in the currently selected "Conversion Loss Table" for the range
(see
"Conversion Loss" on page 422). If no conversion loss table is selected yet, this
function is not available ("CVL Table not selected").
Remote command:
[SENSe:]CORRection:CVL:BIAS
on page 1083
Managing Conversion Loss Tables
Access : [INPUT/OUTPUT] > "External Mixer Config" > "Conversion Loss Table"
In this tab, you configure and manage conversion loss tables. Conversion loss tables
consist of value pairs that describe the correction values for conversion loss at certain
frequencies. The correction values for frequencies between the reference points are
obtained via interpolation.
The currently selected table for each range is displayed at the top of the dialog box. All
conversion loss tables found in the instrument's
C:\R_S\INSTR\USER\cvl\
direc-
tory are listed in the "Modify Tables" list.
Data Input and Output