1250 Frequency Response Analyzer Recording, Learning and Storing Facilities
SH/1250/3 12-3
[pass]: only readings which are within the Limits set via the FUNCTION key will be
passed to the output device.
[off]: no readings will be passed to the output device. Note that the default state is [all]
for the Display but [off] for all the others. When output to the Display is switched off, the
display will become completely blank in measurement mode. No mini status or error
messages will be sent to the Display and the error beeper will not be used. Care should
be taken to ensure that this is not regarded as an indication that the 1250 has been
powered down. The display can be regained by pressing any front panel key which
causes entry into a menu.
The Display can be switched off when using the 1250 as part of a system, so that data
may be transferred more rapidly and also to prevent the display from burning out.
[dump]: this choice is only available for the two output ports, and enables data to be
transferred at maximum speed to some external device such as a computer. Dump
mode is explained in Chapter 13, Section 12.4.
12.1.3 [FORMAT]: HEADING AND REFORMAT
Two soft keys are assigned to this page, giving the selections shown:
HEADING REFORMAT
[on] [on]
[off] [off]
12.1.4 HEADING
HEADING controls the output of headings above the columns of measurements sent to
the RS423 port, and to the GPIB when it is Talk Only mode.
With HEADING switched 'on', (the default state after INITialising, or RESETing the
1250), the first heading is output only after the next measurement when SINGLE or
RECYCLE is pressed.
Fig. 12.1 exemplifies some printer output from the 1250 via the RS423 port. Line 1)
appeared after INITialising; lines 2) and 3) appeared after menu selection, followed by
pressing SINGLE.
I)* INITIALISED
2) FREQUENCY REAL IMAGINARY CHANNEL TIME STATUS
(Hz) & RANGE
3) + 1.0000E + 02 + 6.2007E-07 +8.4455E-07 02/01(R1/3) 00:03:33 BUSY
4) + 1.0000E + 02 -1.0267E-06 -3.3775E-06 02/01(R1/3) 00:03:56 BUSY
5) FREQUENCY MAGNITUDE PHASE CHANNEL TIME STATUS
(Hz) (V) (deg) & RANGE
6) + 1.0000E + 02 + 3.5301E-06 -1.0690E-02 02/01(R1/3) 00:04:37 BUSY
7) FREQUENCY MAGNITUDE PHASE CHANNEL TIME STATUS
(Hz) (V) (deg) & RANGE
8) + 1.0000E + 02 + 4.4962E-00 -3.1962E-02 01/00(R3/0) 00:05:07 BUSY
(* Line numbers refer to text)
Figure 12.1 - Example of printer output with HEADING switched 'on'
After the initial output of headings, pressing SINGLE or RECYCLE no longer has this
effect, but outputs only further measurements. Line 4) in Fig. 12.1 appeared after
pressing SINGLE again.
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