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04 Format
The 04 format transmits trace amplitude information only as a binary number. The binary number is one 8-bit byte
composed from the bytes established with the 02 format.
The 04 output is the fastest way to transmit trace data from the spectrum analyzer to the HP-IB bus. However, sign
information is lost. Keep this in mind when transmitting delta marker information (MKD) . The end of data trans-
mission is NOT marked by a carriage-return/line-feed.
Format Statements and the HP-IB Bus
The table below shows a transmission sequence on the HP-IB bus for each of the four formats. Each format is
transmitting the amplitude of a marker positioned at the - 10 dBm reference line.
Format
Carriage Return
Line Feed
Though the spectrum analyzer transmits either binary or digital information on the HP-IB bus, a decimal number is
always returned to the controller display. This is illustrated in the program below, which reads the instruction word
each of the formats, and the DR command.
1
2
P R I N T E R I S
4
OUTPUT @Sa;"Al;S2;TS;"
10
20
30
0 0 0 0 x x x x x x x x x x x x 0 2
x x x x x x x x
0 3
01
NUM ("1")
NUM (1)
NUM ("0")
NUM (.)
NUM ("1")
13
10
13
10
(Continued) 01,02,03,04
0 4
0 2
Programming 283
0 4
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