INSTALLATION
AND OPERATION
Notes
1 .
This operation does not change the Generator output unless the corresponding
modulation is enabled.
2. Uncalibrated if peak
amplitude exceeds
+13 dBm or If AM depth exceeds 90%
and
AM is
enabled.
3. float
equals floating-point
number.
4. Uncalibrated if FM is enabled and FM deviation is
below
100 Hz or above
(frequency
-100
kHz)/3.
5. Toggles between 400 or 1000
Hz only. An indicator shows selected rate only if
internal
modulation is on.
6.
“0”
selects a modulation rate of 400 Hz; "T’ selects 1000 Hz,
7.
These are ON/ OFF operations; any combination is allowed,
8.
Two
indicators ‘EXT HT and ‘EXT LO’ are lit when external modulation
is on
to
indicate
that the external modulation signal is
2%
above or
2%
below the
nominal
IV
peak input requirement.
9.
“0”
turns the modulation
source off;
“1”
turns
it
on.
Related Operations
Bright-Digit Edit Entry
Step Entry
2-28.
Relative
Function
The
following
paragraphs describe how to change frequency and amplitude using the
Relative mode. There are
two
steps;
1. Setting the reference
2. Changing
the
parameter relative to that reference
Setting
the
reference is done by setting the parameter to the desired value and
then
enabling the relative mode for that parameter. This causes the ‘REL’
indicator
to light
and the displayed value to be zero in the corresponding display. The
Generator
output
does not change during these operations. In the relative mode, the
usual means of
changing the parameter may be used; i.e.,
FUNCTION-DATA-UNIT, Step, or Bright-
Digit Edit Entry.
In the relative frequency mode, the actual frequency is the sum
of
the reference and the
displayed frequency. The actual frequency may be displayed by pressing
the [FREQj key.
In the relative amplitude mode,
the
actual amplitude
is
the
sum of
the reference and the
displayed amplitude when the reference and the displayed quantities have the same
units.
However, with
mixed units (volts and dB), the actual amplitude is the voltage value scaled
by the dB value. The
actual
amplitude may
be
displayed
by
pressing the [AMPL] key.
2-22
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