HP 4145A Operation And Service Manual page 37

SECTION III
Model 4145A
9 HP-IB Status Indicators and LOCAL Key :
@ BLUE Key and GREEN Key:
These four LED lamps-SRQ, LISTEN,
TALK, and REMOTE-indicate the status of
the 4145A when interfaced with a controller
via the HP-IB, or connected directly to a
printer/plotter.
The LOCA-L key, when
pressed, releases the 4145A from remote
(HP-IB) control and enables control from the
front panel. The LOCAL key does not
function when the instrument is set to local
lockout by the controller or in the GL mode.
9 PLOT and PRINT Keys
The PLOT key is used to dump whatever is .
displayed on the CRT directly onto an HP-IB
plotter (e.g., HP9872C),
without a
controller. Plot area can be set from the
4145A's front panel. Plotting starts when
EXECUTE is pressed. Pressing PLOT a
second time stops the plot immediately.
Refer to paragraph 3-117 for
more
information on the PLOT function. The
PRINT key functions similarly to the PLOT
key except that a printer is used instead of
a plotter and only alphanumeric data is
output. If the PRINT key is used to output
the results of a graphic plot, for example,
only the numeric value of
each
measurement point is printed. Refer to
paragraph 3-l 19 for more information on
the PRINT function.
These keys are used to access additional key
functions. Additional key functions are
labeled in blue and green.
BLUE Key: This key is used when
entering comments, varia-
bles,
and program names.
Once this key is pressed
(key indicator lamp on), it
remains on until pressed
again. When the CHANNEL
DEFINITION page is dis-
played or when a SAVE/GET
operation, COMMENT ope-
ration or PURGE operation
is being performed, the
BLUE key is automatically
set to ON (key indicator
lamp on).
GREEN Key : This key is used wher
entering physical constants
and certain special
sym-
bols. It is valid for one
key-in operation only; that
is, it must be pressed each
time a green-labeled key
function is desired.
Figure 3-2. Front Panel Features (Sheet 3 of 6).
3-4