Keysight Technologies N5261A User's And Service Manual page 16

Installation & System Operation
IF OUTPUTs – SMA (female)
— D (from the test set to the analyzer's IF D Input)
— C (from the test set to the analyzer's IF C Input)
— R (from the test set to the analyzer's IF R Input, not installed in the N5261A)
— A (from the test set to the analyzer's IF A Input)
— B (from the test set to the analyzer's IF B Input)
LO IN
This input is from the LO drive of the analyzer. The signal is split and amplified
and then output to the front panel of the N5261/62A.
SRC 1 RF IN and SRC 1 RF OUT
Test set rear panel RF Input access for use with the analyzer's Option 224 or
423.
SRC 1 provides the power input for RF OUT Ports 1 & 2.
SRC 2 RF IN and SRC 2 RF OUT (Not installed in the N5261A)
Rear panel RF Input access for use with the analyzer's Option 224 or 423.
SRC 2 provides the power input for RF OUT Ports 3 & 4.
Chassis Ground
A threaded terminal post for connecting the test set to a conductive object,
cabinet or structure to ensure a common potential and reduce leakage current
in a system. Requires an English 1/4-20 thread nut (0140-0084) and lock
washer (2190-0067).
Pass Through Interface
Connection to another test set.
Test Set I/O
The test set interface connector is used to send address and data to the test
set from the analyzer.
Line Module
This assembly houses the line cord connection, line fuse, and line voltage
selector. Remove the line module cover to replace or change the fuse. Line
voltage selection is automatic and no setting is required. Recommended fuse
values are printed on the rear panel of the N5261/62A.
10 Keysight N5261/62A User's & Service Guide