
Performance Checks 8712ET/ES and 8714ET/ES
Features RF Network Analyzers
1-80 Service Guide
Data Markers
Each measurement channel has eight markers. Markers are coupled between channels.
Any one of eight markers can be the reference marker for delta-marker operation.
Annotation for up to four markers can be displayed at one time.
Marker Functions
Markers can be used in absolute or delta modes. Other marker functions include:
mkr→center, mkr→reference, mkr→electrical delay, searches, tracking, and statistics.
Marker searches include: mkr to max, mkr to min, mkr→target, mkr bandwidth, notch,
multi-peak, and multi-notch. The marker-tracking function enables continuous update of
marker search values on each sweep. Marker statistics enable measurement of the mean,
peak-to-peak, and standard deviation of the data between two markers. For rapid tuning
and testing of cable-TV broadband amplifiers, slope and flatness functions are also
available.
Storage
Internal Memory
1.5 Mbytes of nonvolatile storage is available to store instrument states, measurement
data, screen images, and IBASIC programs. Instrument states can include all control
settings, limit lines, memory data, calibration coefficients, and custom display titles. If no
other data files are saved in nonvolatile memory, between about 30 and 150 instrument
states (depending on the instrument parameters) can be saved. Approximately 32 Mbytes
of volatile memory is also available for temporary storage of instrument states,
measurement data, screen images, and IBASIC programs.
Disk Drive
Trace data, instrument states (including calibration data), and IBASIC programs can also
be saved on floppy disks using the built-in 3.5” disk drive. All files are stored in MS-DOS®
-compatible format. Instrument data can be stored in binary or ASCII format (including
Touchstone/.s1p format), and screen graphics can be saved as PCX (bit mapped), HP-GL
(vector), or PCL5 (printer) files.
Network File System (NFS)
Remote files and directories, such as those stored on a computer, can behave like local files
and directories stored within the analyzer through the use of NFS and the LAN interface.
This allows test data from the analyzer to be saved directly to a remote directory—the
remote machine does not have to initiate an ftp session to retrieve the data. The analyzer
has a built-in NFS client. For Windows-based applications, third-party NFS-server
software must be installed on the PC. NFS is fully supported in most versions of UNIX.
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