Giga-tronics Series 12000A, Operation Manual

Page: 189 / 238

Remote Operation
Publication 31231, Rev. J, October 2003 3-73
3.3.14 Frequency Modulation Commands (Series 12500A/12700A Only)
The Frequency Modulation command set selects of the source of modulation and the modulation
deviation. If Option 24 is installed, the various parameters of the internal generator are able to be set.
Frequency Modulation Commands (Series 12500A/12700A Only)
Model
124XXA
125XXA/
127XXA
FD
N/A
√
FM
N/A
√
FR
N/A
√
FT
N/A
√
NM
N/A
√
FD
Syntax: FD d [HZ | KZ | MZ | GZ]
Example: FD 500 KZ ! Activate FM with a 500 kHz deviation
Description:
Allows setting the deviation to d [HZ | KZ | MZ | GZ], where d is the power (a decimal
number with possible decimal point and/or exponent) and [HZ | KZ | MZ | GZ] is the units
terminator. If the FM mode is Phase, then this command sets the deviation in Radians
(with any units key the terminator).
FM
Syntax: FM n
Example: FM 1 ! Activate External FM
Description:
Activates and selects the source of the FM according to the following values for n. ( NOTE:
This command applies to Narrow, Wide and Phase modes. See the FT command) .
n = 0 Deactivate (turn off) Frequency Modulation.
n = 1 Activate external Frequency Modulation.
n = 2 Activate internal Frequency Modulation (Only with Option 24) and
select sine wave.
n = 3 Activate internal Frequency Modulation (Only with Option 24) and
select square wave.
n = 4 Activate internal Frequency Modulation (Only with Option 24) and
select triangle wave.
n = 5 Activate internal Frequency Modulation (Only with Option 24) and
select positive ramp.
n = 6 Activate internal Frequency Modulation (Only with Option 24) and
select negative ramp.
n = 7 Activate internal Frequency Modulation (Only with Option 24) and
select zero output.