B&K 4071 user manual Return

	IF PointNumber = 1 THEN PRINT #1, "WF" ' Put header info before 1st data point
	IF PointNumber = 2 THEN PRINT #1, "p" ' Set SYNC Out bit for second point
	PRINT #1, PointVal	' Send Floating point number to 4071
	RETURN
'-------------------------	Send Integer data to 4071 ----------------------

'This format sends a base 10 number which is in the range -2047 to +2047

'The integer numbers represent -1.0 to +1.0 as follows:

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

'Rules for Integer format:

'1. The 4071 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 ohm 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
'

'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 whitespace around it

'if desired. SYNC Out is set low for all data points that do not

'have a "p" or "P" before them.

'

'Examples of integer numbers, SYNC Out is set high on point #3:

'0, 123 p -411 -320 +12, +2017, -2047

'------------------------------------------------------------------------------
'----------------------	Send data point as Integer -------------------------
SendInteger:

IF PointNumber = 1 THEN PRINT #1, "WI" ' Put header before 1st data point

IF PointNumber = 2 THEN PRINT #1, "p" ' Set SYNC Out for second point

' Convert the value in PointVal to an integer that ranges from -32767 to +32767

a = INT(PointVal * 2047) ' Convert -1.0, +1.0 val. to a -2047, +2047 val.

65

BK Precision 4071 User Manual Rev.2.2