B&K 4070A user manual Integer Format

7.8.4 Integer Format

This format represents a full-scale output with a base 10 number that ranges from -2047 to +2047 as follows:

-2047 ----	-1024	--- 0 ----	1024 ----	2047
-1.0	-.5	0.0	+.5	+1.0

Rules for Integer format:

1.The 4070A expects all Integer values to be between -2047 and +2047. If a number falls outside that range, the number is set to +2047 or -2047. These correspond to the peak values of the waveform. If the output voltage level were set for 5V p-p, for example, then +2047 corresponds to +2.5V and -2047 corresponds to -2.5V (across a 50 ? load). For maximum signal fidelity, you should design your waveform so that the peak values “just fit” into the range of +2047 to -2047. You will then be using the full output range of the DAC.

2.To separate each number, you may use commas, tabs, spaces, carriage returns and/or linefeeds, semicolons,

colons or basically any character that is not among the following: 0 1 2 3 4 5 6 7 8 9

. - + e E X

3.Use of the "+" character for positive values is optional.

4.Leading “0”’s are ignored.

5.To set SYNC Out high during a data point, put a "p" or "P" BEFORE that data point. The "P" character may have white space around it if desired. SYNC Out is set low for all data points that do not have a “p” or “P” before them.

Example:

A seven points waveform in integer format with SYNC Out set high on point #3:

0, 123 P -1511 -320 +12, +2047, -0032 x

The “x” character denotes the end of the data and is optional. If the “x” character is missing, the 4070A will assume all data has been sent after 1-second timeout.

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BK Precision 4070A User Manual Rev.2.2