User`s guide

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
S
ENSe:FREQuency:GATE:SOURce
S
ENSe:TOTalize:GATE:SOURce
S
ENSe: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
(from Triggered State)
(to SAMPle COUNt reached?)
Gate In/Out BNC Disable
OUTPut:STATe OFF
(for all EXTernal Sources)
(measurement complete)
shown first sequentially
set last programmatically