Tektronix FG 5010 - FM (Frequency Modulation ); FREQ ( Frequency)

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FM ( Frequency Modulation )
Type :
Setting or Query
Setting
Syntax
:
FM | ON
OFF
Examples :
FM
ON
FM
OFF
Query
Syntax
:
FM
?
Query
Response :
FM
ON ;
FM OFF ;
Discussion :
The
FM
command enables or disables
the FG 5010
fre
quency
modulation
function
.
When enabled
the
signal ap
plied to the FM / VCF INPUT connector modulates the output
frequency
about the
center
frequency
selected
by the fre
quency
setting
. Valid
arguments are
:
ON Enables the frequency modulation function .
OFF - Disables the frequency modulation function .
The
power
-
on
setting
is
FM OFF .
An FM query
returns
the function status .
The
VCF
function is
automatically
disabled when
the FM
ON command is executed . The FM function may not be en
abled
while the FG
5010 is in the
PHLOCK
mode .
FM
FREQ (
Frequency )
Type
:
Setting or Query
Setting Syntax :
FREQ < NUM >
Example :
FREQ 1960
FREQ 3E + 5
Query
Syntax :
FREQ ?
Query
Response
:
FREQ
<
NUM
> ;
Programming -
FG
5010
Discussion :
The FREQ command sets the FG 5010 output frequency
to the value specified by the argument . The argument is
specified in hertz
. The power
- on setting
is 1 kHz . A FREQ
query returns the programmed frequency .
The
argument
range is
0.002
Hz to
20.0
MHz .
In
VCF
mode , the frequency may be set to 0.0 Hz . The argument
resolution is ordinarily four digits , but is three digits under
the
following
conditions :
VCF function enabled ; or
FM
function
enabled ; or
MODE is TRIG , GATE , or BURST and FREQ is greater
than
200.0 Hz .
Limits are as follows : The frequency may not be set high
er than 200.0 Hz when the hold function is enabled ; the fre
quency may
not be
set higher
than that
frequency
which
, in
conjunction with the symmetry setting , requires a triangle
ramp
time
of
less
than 25
ns .
FREQ
3-9