Agilent Technologies 53220A, Руководство пользователя

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53220A/53230A User’s Guide 157
Triggering and Gating 5
(Figures 5-2 and 5-5), programmatically it should occur after all other gate
parameters have been set. This prevents potential “settings conflict” errors
between the
SENSe
subsystem commands, and is illustrated in the examples
and program segments that use these commands.
Figure 5-5. Gate Source Sequence.
Typical counter measurements and most applications use an internal signal as
the gate source to control the gate for a specified (or default) period of time.
For applications requiring synchronization with external events or requiring
more precise gate control, an external gate or advanced gating is used. Exter-
Gate Source
IMMediate
ADVanced
SENSe:FREQuency:GATE:SOURce
SENSe:TOTalize:GATE:SOURce
SENSe:TINTerval:GATE:SOURce
SENSe:FREQuency:GATE:TIME
SENSe:TOTalize:GATE:TIME
SENSe:TINTerval:GATE:SOURce IMMediate
Gate Start (
open
)
Gate Stop (
closed
)
TIME
SENSe:FREQuency:GATE:POLarity
SENSe:TOTalize:GATE:POLarity
SENSe:TINTerval:GATE:POLarity
EXTernal
Gate Start (
open
)
Gate Stop (
closed
)
INPut[1] | INPut2 *
INPut[{1|2}]:LEVel[{1|2}][:ABSolute]
* not available with time interval
(
fro m Trigg ered Sta te
)
(to SAMPle COUNt reached?)
Gate In/Out BNC Disable
OUTPut:STATe OFF
(fo r all EXT ern al Sou rce s)
(
m
easuremen
t complete
)
shown first sequentially
set last programmatically