B&K 4070A User Manual

 

 

BK Precision 4070A User Manual Rev.2.2 

57 

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. 

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.