Model 5328A
Programming
5-21.
MEASUREMENT OUTPUT FORMAT
5-22. The 5328A transmits the following string of characters to output a measurement:
Position 1 2 3 thru 12 13 14 15
Character
1
2
SP
+
SP
+
0
+
9
digits and
decimal point.
1
Ill
"0"
in the first position indicates measurement
overflow. Leading 0's in positions
3
to 72 are output as
SP
(space) if they occur to the left of the decimal point
except for the 0 next to the decimal point. The decimal
point may appear at positions
4
to 72. The output string
is
always 77 characters long. Typical character output
strings are:
5-23.
BUS COMMANDS
5-24. The 5328A Universal Counter obeys the following Bus Commands (ASCII codes shown in
parenthesis and in Table 5-4):
a. Unaddress Commands:
UNL
Unlisten (ASCII question mark
"?")
Clears the counter from acting as a listener.
UNT Untalk (ASCII underscore
"-")
Clears the counter from acting as a talker. The same result can beachieved
by addressing any other device on the bus to talk.
b. Universal Commands:
LLO Local Lockout (ASCII DCI)
Disables all programmable controls including reset. Go to Local (GTL) may
be used to return to manual control.
DCL Device Clear (ASCII DC4)
Resets the programmed state of the counter to the codes shown in bold
face in the program code set. Has the same effect as the program code "P".
SPE
Serial Poll Enable (ASCII CAN)
Sets the counter to theserial poll mode. When addressed to talk during the
serial poll mode, the
5328A produces a status byte to indicate itscondition.
If the counter has completed a measurement and
is
requesting service, the
status byte contains a "1" in bit
7
(decimal value 64). If the counter has not
requested service, the status byte will be
"0"
in all bits. When addressed to
talk in the serial poll mode, the counter will immediately stop requesting
service.
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