Modulation Source
Modulation
FM,
4M
modskeys.dm
\
b-
MODULATION
\
SOURCE
Coupling Range
EXT
AC
20
Hz
to
75
kHz
i
1. MOD
ON/OFF
AM
2.
INT400Hz
INTlkHZ
EXT
DC
EXT
AC
DC
to
75
kHz
20
Hz to
25
kHz
3.
EXTAC
EXT DC
4'
2
3
5
Press (MOD
ONIOFF)
to turn on or
off
the currently-selected modulation
mode (AM, FM, or $M).
OFF
appears in the second line
of
the
MODULATION display when modulation is turned
off.
This key also turns on or
off
the audio output at the
MOD
INPUT/OUTPUT connector when an internal source
(400
Hz
or
1
kHz)
is selected. The operation of
this
key is the same
as
the
[MOD
ON/OFF)
key on the HP 83300A Remote Interface.
Press one of these keys to select an internal source for modulating the
carrier. The selected source is also output at the
MOD
INPUT/OUTPUT
port
as
a
1
Vpk signal into
60061.
Press one of these keys to configure the
MOD
INPUT/OUTPUT port as
an ac- or dc-coupled input for modulating the carrier.
Calibrated modulation requires
an
audio source
of
1
Vpk into
600hl.
For audio source frequencies of less than
10
kHz, a
HI
or
LO
indicator
will appear in the second line
of
the MODULATION display when the
level of the source is not within approximately
&5%
of
1
Vpk.
Acceptable Frequency Ranges for
an
External Audio
Source
1
EXT
DC
1
b.16
Operation Reference
To Next Page
Loading...
