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Table
2-1.
Front
Panel
Controls,
Indicators,
and Connectors
(cont)
REJ
ENTRY
Lights when an invalid entry
is
made.
UNCAL
Lights when
a
parameter entry
is
outside
its
specified
range.
This indicator flashes when any
of
the
internal
DAC's are over
or
under-flow
or
when any abnormal
operation
is
detected.
RF
OFF
Lights when the
RF
OUTPUT
is
disabled.
REMOTE
Lights when the Generator
is in the
remote ClEEE-488
interface) mode
of
operation.
ADDR
Lights when the Generator
is
addressed to Listen
or
talk.
SRQ
Lights when the Generator has asserted the IEEE-488
SRQ
signal.
©
MODULATION
ON/OFF
Used to select type^ source^ and frequency
of
modulation.
With the
exception
of
the
C400/1000T
key^ these keys
operate
as
independent push-on/push-off switches
for
the given function. Any
combination
is
allowed.
INT
AM
Erables internal amplitude
modulation
at the
frequency
annunciated
by the
400/1000
Hz indicator.
INT
FM
0M
Enables internal frequency modulation
at the
frequency
annunciated
by the
400/1000
Hz indicator.
EXT AM
Enables external amplitude
modulation using
the signal
applied
to the MOD
INPUT connector.
EXT
FM
0M
Enables external frequency
modulation using
the signal
applied to the TOD INPUT connector.
ext_TL
Enables external pulse
modulation using
the
signal
applied to the PULSE MODULATION
INPUT connector.
400/1000
Alternately sets
the internal
modulation oscillator's
frequency
to
400
or
1000
Hz,
Selected frequency
is
displayed only when
INT
AM^
FM^
0M, or internal pulse
is
enabled.
©
FUNCTION
With the
exception
of
the CSTEP] and CSPCL3 keys, these
keys
operate
as
interlocked switches
that select the
parameter
to be
entered
or
edited. For the CFREQ3,
[AMPLD, CAM], and CFM]
FUNCTION
keys, the
bright digit
appears
in
the
corresponding display
of
the
selected
function.
FREQ
Selects the frequency parameter
of
the Generator to be
programmed
by
using
the DATA, EDIT,
or
STEP entry keys.
AMPL
Selects the
amplitude parameter
of
the
Generator
to be
programmed
by
using
the DATA, EDIT,
or
STEP
entry
keys.
AM
Selects the amplitude
modulation
CAM)
parameter
of
the
Generator
to be
programmed
by
using
the DATA,
EDIT,
or
STEP entry keys.
FMjBM
Selects the frequency
modulation
(FM),
or
phase
modulation
(0M)
parameter
of
the
Generator
to be
programmed
by
using
the DATA, EDIT,
or
STEP
entry
keys.
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