IEEE-488 Programming
3-13
3.2.10 Data store mode (Q)
Purpose
To control the data store rates and trigger mode.
Format
Q0
Conversion rate (one reading every 360msec)
Q1
One reading per second
Q2
One reading every 10 seconds
Q3
One reading per minute
Q4
One reading every 10 minutes
Q5
One reading per hour
Q6
Trigger mode (TRIG button)
Q7
Data store disabled
Default
Upon power-up, or after receiving a DCL or SDC, data store is disabled (Q7).
Description
The data store commands enter the data storage mode and allow you to store up to 100 readings
within the internal memory of the Model 6512. By entering an appropriate parameter, readings
may be stored at one of six intervals between the conversion rate and one reading per hour. Either
during or after the storage process, readings, including maximum and minimum values, may be
recalled by using the B command as described in paragraph 3.2.2.
Once the unit has stored all 100 readings, it will stop data storage until another Q command is
sent to enable data store once again. Note that the instrument may be programmed to generate
an SRQ when memory is full, as described in paragraph 3.2.8.
In addition to the various rates, data store can be used at a rate determined by the TRIG button
(Q6 mode). When in this mode, one reading will be stored in memory each time TRIG button is
operated.
Programming
1. To use data store on a one-shot basis with other trigger sources, place the instrument
Notes
in the Q0 mode, and select the desired one-shot trigger mode (paragraph 3.2.12).
2. In Q0 and Q1, the storage rate may be decreased if the instrument is in auto-range and a
range change occurs.
3. See Appendix D for an example program that demonstrates data store operation.
Examples
Q1X
Enable data store, one per second rate.
Q7X
Disable data store.
Summary of Contents for 6512
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