FREQ
Command
The frequency sweep controls are as follows:
Table
3-2.
Frequency
Controls
Range
CW,
FIXed,
SWEep or
LIST
numeric value sets start frequency
numeric value sets stop frequency
numeric value sets center frequency
numeric value sets frequency span
Note
3
Changing the span alters the start and stop frequencies but not
center
Programming
The following sections give programming examples for the
Examples
HP E1440A. The examples are divided into three different sections,
a simple function generator, a multi-interval sweep generator and
a multi-marker sweep generator.
All
of the programs assume the
following:
rn
an HP 9000, Series 200 or 300 Computer as controller
rn
that BASIC is the programming language
rn
that the HP E1440A is preset to HP-IB address
11
rn
that the slot
0
commander (E1405) is set to primary HP-IB
address 9
Function Generator
The following program shows an example of how to program the
HP
E1440A as a function generator. The program shows how to:
1.
Clear all devices (resets E1440A)
2.
Set the waveform as
a
square wave
3. Set the frequency to 10
kHz
4. Set the amplitude to
1
V(p-p)
5.
Set the DC offset to 4.5 V
6.
Set the phase to
45'
7.
Switch the output on
Using
the
HP
E1440A
3-3
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