SRQ Force Service Request
This displays the octal equivalent of the status byte binary number:
SRq
140
The octal equivalent is based on the whole binary number:
01100000 (binary) = 140 (octal) One simple way to determine the octal equivalent of the binary
number is to partition the binary number three bits at a time from the least significant bit, and
treat each part as a single binary number:
binary 0 1 100 000
octal
1
4
0
The decimal equivalent of the octal number is determined as follows:
140 (octal) = 1 x (8) + 4 x (8) + 0 x (8) = 96 (decimal)
More than one service request can be sent at the same time. For example, if an illegal spectrum
analyzer command (SRQ 140) and the end of a sweep (SRQ 104) occurred at the same time,
SF&l
144 appears on the spectrum analyzer display, because both bit 5 and bit 2 are set as shown
below:
bit number 7 6
status byte 0 1
octal value
1
54 3
100
4
2 10
100
4
= SRQ 144
Programming Commands 5-523