38
Appendix C. Command language
C.5
Modulation
MOD
MOD,ch,type[,onoff][,gain]
MOD,ch[,type1][,type2]
MOD,ch,PRI[,type]
MOD,ch,SEC[,type]
Enables (or disables) modulation type of a given type (amplitude,
frequency, or phase) for the selected channel.
type
One of
F[REQ]
(frequency),
A[MPL]
(amplitude),
P[HAS]
(phase) or
N[ONE]
.
onoff
Can be
ON
or
OFF
. Reports whether this modulation mode is cur-
rently enabled if not supplied.
gain
Optionally specify gain for this modulation type; equivalent to sub-
sequently using the
GAIN
command.
If two types are specified, dual-modulation is enabled with the given
primary and secondary modes (
Alternatively the primary and
secondary modes can be configured separately by specifying
PRI
or
SEC
.
GAIN
GAIN,ch,type[,gain]
Sets the modulation gain for the specified modulation type on the
given channel.
gain
is a floating-point number with units or a signed
hexadecimal integer that controls the depth of the modulation (
If
gain
is negative then the modulation action is inverted.
MAPMOD
MAPMOD,ch[,pri,sec]
Configures the primary and secondary modulation inputs for the spe-
cified
RF
channel (see
The parameters
pri
and
sec
are 1–4
corresponding to the associated numbered input on the back-panel,
or “*” for no change.
Note that changing the modulation mapping
may
disable
modulation
on
those
channels,
after
which
they
may
need to be re-enabled.
Summary of Contents for QRF041
Page 1: ...Quad RF Synthesizer QRF041 QRF241 Version 0 2 0 Rev 2 hardware ...
Page 4: ...ii ...
Page 10: ...viii Contents ...
Page 12: ...x Getting started ...
Page 16: ...4 Chapter 1 Introduction ...
Page 22: ...10 Chapter 2 Connections and controls ...
Page 28: ...16 Chapter 3 MOGRF host software ...
Page 36: ...24 Chapter 4 External modulation ...
Page 46: ...34 Appendix B Firmware upgrades ...
Page 56: ...44 Appendix C Command language ...
Page 60: ...48 Appendix D Communications ...