FIRST TIME USE
3-9
Selecting functions and keyboard entry
Whenever one of the main functions
−
carrier frequency, RF level, modulation
−
is highlighted on
the main screen, making any terminated numerical entry will be accepted as being a changed
parameter for that function. This enables you to enter, for example, a sequence of carrier
frequencies without having to re-press the
[Carrier Freq]
key for each entry.
First of all, select the A source for adjustment by pressing the [A] key.
Carrier frequency
(1) Press
the
[Carrier Freq]
soft key to select carrier frequency as the current function. The key
label is highlighted so that the line bordering the label is increased in thickness to about
1 mm. Data entered on the key pad will now be recognized as a frequency setting and
replaces the current setting.
(2) Enter 100 MHz by entering 100 on the numerical key pad and terminating with [MHz].
Observe that the
Carrier Freq:
display changes to
100.000 000 MHz.
If you make an error when keying in, press the function key again and key in the correct value. If
this causes an error message (for example,
Err 1100: Carrier Limit
) to be displayed, it can be
canceled by a correct entry (for example, by entering a value which is within limits).
RF level
(3) Press
[RF LEVEL]
(which causes its key label to be highlighted) to select RF level as the
current function.
(4) Enter 10 dBm by entering 10 on the numerical key pad and terminating with [dB]. Observe
that the
RF Level:
display changes to
+
10.0 dBm
.
(5) Press the [RF ON/OFF] key for the A signal source. Repeated pressing toggles between the
on and off states as shown by
A
ð
O
/P
ON
and
OFF
in the A source panel. Select
ON
. A
100 MHz, 10 dBm carrier is now being generated from the A source RF OUTPUT socket.
Modulation
(6) Press
[FM Devn].
Enter 100 on the key pad and terminate with [kHz].
100 kHz
is displayed
in the modulation field.
(7) Press
[FM Mod Freq].
Enter 500 on the key pad and terminate with [Hz].
ModF: 500.00 Hz
is displayed .
(8) Press
[Mod ON/OFF].
Repeated pressing toggles between the on and off states as shown by
Modulation ENABLED
and
DISABLED
at the centre of the screen. Select
Modulation
ENABLED.
(9) Press
[FM ON/OFF].
Repeated pressing toggles between the on and off states as shown by
ON
and
OFF
on the screen. Select
ON
. A 100 MHz, 10 dBm carrier is now being generated
at 100 kHz deviation, sine wave modulated at 500 Hz from the A source RF OUTPUT
socket.
