HP 5344S User Manual

Operating Information Model 8756A
The
Set Cursor Position command is useful for setting the CURSOR on a
data trace at a specific frequency. Given the Start and Stop
frequencies, the CURSOR may be set to a Frequency using the formula:
Set Cursor Position value= (Frequency- Start)*400/(Stop- Start)
Non Swept Mode stops the update of data traces with the 0 to 10 volt
sweep ramp, and is used to hold data for taking the measurement and
outputting the data. Swept Mode causes the data traces to update
with the sweep ramp, and should be received by the 8756A to restore
normal swept frequency displays.
Take Sweep is used to take a specific number of sweeps, then hold data
on the display. This is useful for controlling the 87 56A in
normalization (M-MEM) and averaging applications.
Write Key is used to put user defined labels on the Soft Keys. The
"WK" command is followed by the soft key number in ASCII, range 1
through 6. Then, this is followed by "[ASCII label]" for a single
line label or "[ASCII label] [term], [ASCII label] [term]" for a two
line label. The ASCII label must be seven characters or less and
terminated as shown by [term] = [cr] [lf] or semicolon ; •
Write Memory is used to write to a particular channel memory with 401
points of data. After receiving the "WM" command, the 8756A expects
401 values in the format ("FDl" or "FDO") previously selected.
These values, in turn, are written to the Channel Memory previously
designated ("Cl" or "C2").
HP-IB OUTPUT COMMANDS
Data is output from the 8756A by first sending one of the "0" commands
listed in Table 3-2. Output Cursor, Output Data, and Output Value
are used to obtain measurement data, in either ASCII format ("FDO"}
or Binary format ("FDl"}, where the most significant byte is sent
first.
Refer to Table 3-2 for Output Identity and Output Keycode. The
Output Status command is explained under SERVICE REQUEST & STATUS
BYTES.
HP-IB ERROR MESSAGES
Any alphanumeric sequence which is not a recognized 8756A command
will be noted on the CRT in the ACTIVE ENTRY Area as "UNKNOWN CMD-"
followed by the last one or two characters received by the 8756A over
HP-IB. The 8756A will not lock out further HP-IB traffic, and will
execute any subsequent valid command. Further, a syntax error
service request (SRQ} will be sent if that SRQ bit has been enabled in
the Request Mask (see SERVICE REQUEST & STATUS BYTES below}. If
there are many errors in the alphanumeric sequence, only the last
error is displayed in the ACTIVE ENTRY AREA.
Figure 3-4. HP-/B Operating Features (3 of 7)
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HP 5344S Specifications

General

Brand	HP
Model	5344S
Category	Measuring Instruments
Language	English