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HP 5384A and HP 5385A
SYSTEMS
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state. In the nmmal state, measU<ements a'e made
continuously regardless of whether or not those
measurements were read by the controller.
3-152.
DR (string) Remote Display
3-153.
The remote display command is legal only
when the counter is in the measurement mode. lfthe
command is received while the counter is in the
diagnostic mode, an error will be flagged.
3-154.
The remote display command allows the user
to send any message, 12 characters in length ex-
cluding punctuation, to the LCD. A punctuation mark
(comma, colon, or decimal point) can be sent between
each of the characters.
3-155.
Although the counter will continue making
measurements, the LCD will contain the message sent
with the "DR" command rather than the measure-
ment data.
3-156.
Whenever a new message is to be displayed,
the remote display command must be sent. Thus each
new message must be sent in the form "DRXXXXXXXXXX",
where the X's represent the message to be displayed.
Carriage return, line feed, form feed, horizontal tab,
and vertical tab can be used as terminators for a
remote display message. A message sent to the display
will remain there until a command which causes a
change in the display is sent to the counter.
3-157.
The remote display mode can be terminated
in several ways. Sending a "Dl" (display local) com-
mand will terminate the remote display mode with-
out changing the state of the counter in any other
way. When the counter receives this command, it will
clear the display and resume displaying measurement
data. Sending a diagnostic command also terminates
the remote display mode, but it causes the counter to
exit the measurement mode as well. Pressing the
RESET /lOCAl key is another way of terminating the
remote display mode, however, the key will cause the
counter to exit the remote state and enter the local
state. Any transition from the remote state to the local
state, caused by the controller, will terminate the
remote display mode as well.
3-158.
If an error condition is generated while the
instrument is in the remote display mode, the error
message will be displayed just as in any other case.
However, when the error is cleared, the counter will
no longer be in the remote display mode; it will begin
3-18
displaying the measurement data rather than the
message contained in the LCD prior to the error
condition.
3-159.
DL Display Local
3-160.
The display local command allows the user to
terminate the remote display mode without changing
the state of the counter in any other way. When the
counter receives this command, it will clear the
remote display message and begin displaying mea-
surement data.
3-161.
ID and Sl Send Device ID
3-162.
These two commands perform the same
function. Whenever the counter receives either of
these two commands, it will send its I D to the
controller. Either "HP 5384A" or "HP 5385A" will be
sent to the controller. The counter will wait until the
device ID is read by the controller before it will
resume taking measurements again.
3-163.
SE Send Error
3-164.
When the send error command is received,
the instrument will send the number of the detected
error (there may be more than one) to the interface
bus. We recommend the "SE" command be used in a
string by itself.
3-165.
LCD Character Set
3-166.
Table 3-10 shows the characters the instru-
ment can produce. Included in the table is a code
needed to produce the character and how the
displayed character will look.
3-167.
PROGRAM EXAMPLES
3-168.
The following examples demonstrate pro-
gramming capabilities of the HP 5384A and HP 5385A.
The first four examples are written for the HP-85A
controller. The fifth example is written for the HP
41C/CV. A summary of the program operation and a
line-by-line description are provided for each example.
Example 1
Example 2
Example 3
Example 4
Example 5
Instrument Identification
Reading Status Byte
Frequency A
Remote Display
Frequency A Measurement
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Troubleshooting
