Boonton 4400A Manual Addendum Download Page 5

3.0 Corrections 

 

1.  Remove glitches that occur when in Triggered mode (as opposed to Auto) and certain 

commands are executed. Also, measurement traces can now be moved and re-scaled 
when Waiting for Trigger on the slow time bases. 

 
2.  Calculate the auto-measure parameter “OFF TIME”. This function has always been 

enabled but there was no calculation method included.  

 
3.  Correct an overflow error in the cal table expansion that overwrites the first position 

of the channel 2 table when channel 1 is expanded. This may cause the channel 2 
PDF to not appear.  

 

4.  GPIB command TKBMEAS now reports the sign of Pk/Avg ratio correctly.  
 
5.  Marker math mode changes now occur immediately even in wait for trigger. 
 
6.  When both markers are in trigger view mode the marker math functions MK1-MK2, 

MK2-MK1, MAX-MIN and MIN-MAX are computed as voltage difference and 
appear in the middle window with voltage difference units. The PK/AVG mode is not 
recognized in trigger view mode but is not an error. This correction also appears in 
the parameters of GPIB commands TKMEAS, TKBMEAS and TKUNITS when 
appropriate.  

 
7.  The trigger pointer is now removed when the direct set of a statistical mode occurs. 
 
8.  Restore the legacy GPIB command MKDELTA to set the marker math to power 

difference in the linear units mode only. This command was deleted by mistake in the 
“A” series. 

 
9.  Update the RUN/STOP message in the recall stored setup function to avoid out of 

sync messages. 

 
10. Change the linear mode reference lines to track vertical offset in “divisions” rather 

than watts, which is incorrect. 

 
 

 

 

Revised 20020513

 

 

 
 
 
 
 
 

 

 

 

98404706A 

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Summary of Contents for 4400A

Page 1: ...n and Off will be displayed The Off setting is volatile and not preserved through power cycles or major mode changes If the sensor in use does not have a temperature compensation table the Temp Comp menu box will not appear at all The Spcl Chan n Sensor report will include the message Sensor has Temperature Compensation Table when appropriate The Spcl Servicing Configuration report shows TC system...

Page 2: ...en with the new result If no previous file exists one is created Sensor filenames have the form SEN AC n where is the serial number and n is the channel number The file directory system is expanded to display auto calibration files in flash memory as well as the previous files on the floppy disk The Utility Disk Flash Disk path lists sensor auto cal files by channel The Select File menu contains a...

Page 3: ...s made with the trigger inputs The following procedure is used to calibrate each external trigger input Set Time Timebase to 5 ms Div Set Trig Trig Mode to Auto Select the external trigger input in the Trig Trig Source menu corresponding to the selected measurement channel CH1 to 1EXT or CH2 to 2EXT Set the Chan Extensions Display to Trig Trigger View Mode Set the Chan Vert Scale to 1 00 V Div Set...

Page 4: ...iles should be converted by reading the INS files and saving them as ISU The file directory is modified to display ISU files The GPIB commands are not affected 2 2 GPIB command OPT change An installed hardware options list has been appended to the OPT GPIB command format previously used For example a single channel instrument with Option 04 hardware installed and a sensor plugged in returns 1 1 0 ...

Page 5: ...er 6 When both markers are in trigger view mode the marker math functions MK1 MK2 MK2 MK1 MAX MIN and MIN MAX are computed as voltage difference and appear in the middle window with voltage difference units The PK AVG mode is not recognized in trigger view mode but is not an error This correction also appears in the parameters of GPIB commands TKMEAS TKBMEAS and TKUNITS when appropriate 7 The trig...

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