Atec Agilent-8720D - Manual (Page 10)

10
Option 089
Option 089 adds frequency offset mode, allowing
the receiver to be offset from the source frequency.
This allows direct conversion loss measurement of
mixers without need for a reference mixer. RF and
IF frequencies must be within the specified operat-
ing range of the instrument. This test set modifica-
tion adds an internal reference channel switch and
deletes the reference channel output. Firmware
guides the user through test setup. When not in
frequency offset mode, the system operates as a
standard system and meets standard instrument
specifications.
Supplemental characteristics (Option 089)
8719D/8720D 8722D
Reference (R) Input Level
Minimum
-34 dBm -34 dBm
Maximum (for 0.1 dB compression) -7 dBm -12 dBm
Maximum (damage level) 0 dBm 0 dBm
Note: To utilize full instrument receiver dynamic range, measure test signal
at port 2. This configuration requires a power splitter and reference mixer
to provide a phase lock signal to the R channel input.
System performance (continued)
Analyzer’s guided test setup display
Option 089 test set block diagram
Mechanical
transfer switch
R channel
input
LO source
Source
Samplers
Reference
switch
Mixer
under test
A
R
RF IF
LO
B
Filter