Language Reference

TDF

230

OUTPUT 723;"TDF P;TRA[50]?;"

Query trace data as decimal values in absolute

 

 

units (dBm). Query only the 50th element.

240

ENTER 723;N

Assign data to variable .

250

DISP N

Print value .

Description The TDF command formats trace information for return to the controller.

TDF P (parameter) gives data as ASCII-decimal values in absolute units (dBm). Trace data values are separated by a \," character.

TDF M (measurement) gives data as ASCII-decimal values in measurement units. Trace data values are separated by a \," character.

TDF A gives data as an absolute block data ￿eld. The MDS command determines whether data comprises one 8-bit byte or a 16-bit word.

TDF I gives data as an inde￿nite block data ￿eld. The MDS command determines whether data comprises one 8-bit byte or a 16-bit word.

TDF B gives data as binary values in measurement units. The MDS command determines whether data comprises one 8-bit byte or a 16-bit word.

The following tables summarize how the TDF command a￿ects trace data transmission.

HP-IB Transmission Sequence for Di￿erent Trace-Data Formats (TDF)

 

TDF P

TDF M

TDF B

TDF A

TDF I

Byte 1

1

1

(3)

#

#

Byte 2

0

0

(232-EOI)

(A)

(I)

Byte 3

 

 

 

 

 

.

0

 

(0)

(3)

Byte 4

0

0

 

(2)

(232-EOI)

Byte 5

 

10 (EOI)

 

 

 

0

 

(3)

 

Byte 6

10(EOI)

 

 

(232)

 

 

 

 

 

(10-EOI)

 

7-479