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The APB command adds trace A and trace B, point by point, and sends the result to trace A. Thus, APB can
restore the original trace after an A-minus-B function (AMB) is executed.
To successfully add all trace elements, place trace A in VIEW or BLANK display mode before executing APB. The
sample program below has both traces in STORE mode.
10
ASSIGN @Sa TO 718
2 0
OUTPUT @Sa;"IP;LF;"
3 0
OUTPUT @Sa;"CFlOOMZ;SP2MZ;"
4 0
OUTPUT @Sa; "A3;"
5 0
OUTPUT @Sa;"Bl;CFlOOMZ;"
8 0
OUTPUT @Sa;"B3;"
7 0
OUTPUT @Sa;"APB;"
8 0
E N D
Line 20:
Presets the instrument.
Line 30:
Sets trace A to 100 MHz center frequency with 2 MHz frequency span.
Line 40:
Views trace A.
Line 50:
Selects trace B and sets center frequency to 200 MHz.
Line 60:
Views trace B .
Line 70:
Combines the amplitude of trace B with trace A and displays this combination as trace A.
The functions of the APB and KSc commands are identical.
APB
P r o g r a m m i n g
29
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