GPIB Operation 7-5
Long integration readings
When taking long integration readings, make sure to set the timeout value longer than the
integration time. For example, if the integration period is 15 seconds, set the “GPIB timeout for
responses”
> 15000. Setting the “GPIB timeout for responses” greater than the integration time
ensures that a GPIB timeout does not occur while the Model 2306 is integrating the reading. The
GPIB timeout may need to be set to a value greater than twice the long integration time for cases
where the triggered edge was just missed (refer to Figure 4-2).
Pulse current readings
When taking a pulse current low readings with a low time of 500ms and a pulse average of
50, the integration will take 25 seconds. Since the integration period is 25 seconds, set the “GPIB
timeout for responses”
> 25000. Setting timeout when taking pulse current high and pulse
current average readings is similar.
MAV (Message Available Bit)
The MAV is an alternative to setting the GPIB timeout for responses. The MAV is the
message available bit of the status register. Enabling the MAV bit causes an SRQ to occur when
the instrument has a message to send to the computer.
When using the MAV, two additional commands are required *SRE 16 and the command that
w
aits for SRQ (specific to programming language).
Example
Command Description
*SRE 16
Sets the MAV bit to enable. This
comma
nd is required before the send-
ing READ? command.
READ?
Requests power supply to trigger a
reading for the se
lected function on
the battery channel (channel 1).
Programming language specific Wait for SRQ.
Programming language specific Request power supply to talk.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
To Next Page
Loading...
Need help?
General
