Agilent Technologies E1441A Manuale Utente
110
Agilent E1441A SCPI Command Reference
Chapter 3
•
When the external source is selected, the output frequency is determined by the
signal level on the source selected by the TRIG:SOUR command. When a
“low”
“low”
TTL
level is present, the carrier frequency is output. When a “high”
TTL
level is present, the hop frequency is output.
•
The maximum external
FSK
rate is 1 MHz.
FSKey:SOURce?
[SOURce:]FSKey:SOURce?
queries the internal
FSK
source. Returns “
INT
” or
“
EXT
”.
FSKey:STATe
[SOURce:]FSKey:STATe OFF|ON
disables or enables
FSK
modulation. To ensure
proper operation, you should enable
FSK
after you have set up the other modulation
parameters. Only one modulation mode can be enabled at a time. When you enable
FSK
, the previous modulation mode is turned off.
FSKey:STATe?
[SOURce:]FSKey:STATe?
queries the state of the
FSK
mode. Returns “0” (
OFF
) or
“1” (
ON
).
Selecting an Arbitrary Waveform
FUNCtion:USER
[SOURce:]FUNCtion:USER <
arb name
>|VOLATILE
selects one of the five built-in
arbitrary waveforms, one of four user-defined waveforms, or the waveform currently
downloaded to
downloaded to
VOLATILE
memory.
Parameters
•
The arb name may contain up to 8 characters. The first character must be a
letter (A-Z), but the remaining characters can be numbers (0-9) or the
underscore character (“ _ ”). Blank spaces are not allowed. If you specify a
name with more than 8 characters, a +783, “Arb waveform name too long”
error is generated.
underscore character (“ _ ”). Blank spaces are not allowed. If you specify a
name with more than 8 characters, a +783, “Arb waveform name too long”
error is generated.
•
The function generator does not distinguish between upper- and lower-case
letters for the arbitrary waveform name. Therefore, ARB_1 and arb_1 are the
same name. All characters are converted to upper case.
same name. All characters are converted to upper case.