The two digits form the hex. address that applies to succeeding DATA commands or queries.
DATA (instrument bus data) command:
Maintenance—492/492P Service Vol. 1 (SN B030000 & up)
HEX. DIGITS: As with ADDR, a pair of digits forms a hex. number. The number is a data value to be stored at the
instrument bus location specified by the last ADDR command. This allows internal 492P parameters to be set for
servicing; these parameters control functions by setting the status or mode of 492P circuit assemblies. Up to 16 pairs of
characters are accepted to set a function to a new value repeatedly. If a character is not a hex. digit or part of a pair of
digits, the data byte formed by the pair is not executed and an error is reported. Also, an error is reported when data is
sent to an invalid address.
DATA (instrument bus data) query:
d a t a ? y
3784-162
Response to DATA query:
DATA )—
HEX DIG IT
HEX DIGIT
3 7 8 4 - 1 6 3
Combined ADDR command and DATA command:
4-44
REV JUN 1983
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