Agilent Technologies Signal Analyzer N9030a - Manual (Page 60)

2 About the N9061A Measurement Application
General Rules and Limitations
General Rules and Limitations
The N9061A application has been designed to emulate as closely as possible the operation of the
specified spectrum analyzers. It is not, however, intended as a fully-compatible, direct
replacement for these analyzers. This section highlights the following specific emulation
differences and limitations:
"AC/DC Coupling" on page 60
"Couplings" on page 61
"Markers" on page 61
"Numeric Ranges" on page 61
"Parsing" on page 61
"Predefined Functions" on page 61
"Remote Control" on page 62
"Returning Data" on page 62
"Units" on page 62
"User-defined Functions" on page 62
"Supported Commands" on page 62
"EP Parameter" on page 63
"OA Parameter" on page 63
"Handling of Unsupported Commands and Queries" on page 63
AC/DC Coupling
The 44 GHz and 50 GHz X-Series instruments only have DC coupling. The X-Series instruments
with a 26.5 GHz frequency range, and lower, default to AC coupling on preset. When the selected
legacy instrument is HP8566A, HP8566B, HP8563, HP8564, or HP8565, N9061A defaults to DC
coupling.
When AC coupled, the 8560E/61E/62E have a 100 kHz low frequency limit, whereas X-Series
instruments have a 10 MHz limit.
For HP8568A/B compatibility and consistency, N9061A supports the I1 and I2 commands. These
select AC or DC coupling at the RF input. Note that the HP8568A/B has two RF input ports,
whereas X-Series instruments have only one.
60 Remote Language Compatibility Measurement Application Reference