HP 5340A Operating And Service Manual page 31

Model 5340A
Installation and Remote Programming
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Octave Ranges The 5340A can be made to operate in a particular octave range by send-
b.
ing it the proper ASCII character. This feature can save up to 110 msec of search time
when the signal to be measured is in one of the octave ranges. When a controller wants
to take control of the 5340As operation, it only changes those cells where initial con-
ditions are different than the desired program. Program information may be sent in any
sequence. The 5340A will not make a measurement if there is either no signal in the
selected range or there is one with a larger amplitude in some other range. When AUTO
is selected, the 5340A automatically sweeps through all ranges until it finds the signal
to be measured.
c. Sample Rate Modes
(1) Internal Sample Rate
RATE control.
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(2) Hold The 5340A waits in the Sample Rate phase of its operating cycle until
made to continue by either a SAMPLE TRIGGER instruction, a RESET in-
struction or the front panel RESET pushbutton is depressed.
Sample Trigger Instruction
d.
RATE HOLD mode. It makes the 5340A leave the Sample Rate HOLD phase of its
operating cycle and make a measurement. Sample trigger does not reset the display nor
does it initialize the phase locked loops (make the 5340A go through its search pro-
cedure). The 5340A will ignore the Sample Trigger instruction unless it is waiting in
the Sample Rate phase of its operating cycle.
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e. Reset Instruction
measurement procedure. It may be sent at any time in the 5340A's operating cycle. A
reset instruction does not initialize the remote program storage cells as does the front
panel RESET pushbutton.
LISTEN whether in local or remote operation.
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f. Output Modes A 5340A outputs in one of two modes providing it has been addressed
to TALK.
ONLY I F addressed (ASCII "L" stored in the program storage cell). The 5340A
(1)
will output each measurement if it has been addressed to TALK. If not
addressed, it bypasses the entire output phase of its operating cycle.
(2) WAIT until addressed (ASCII "M" stored in this program storage cell). The
ating cycle until it is addressed to TALK. As soon as it is so addressed, it will
output and continue according to the information in its program storage cells.
Notice that the 5340A ALWAYS outputs when it reaches the output phase of its oper-
ating cycle IF it has been addressed to TALK. When programmed ONLY IF, the 5340A
continues through its operating cycle bypassing the Output phase until addressed
to go
TALK. When programmed
to
there until addressed to TALK.
g. Local-Remote
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(1) Local The 5340A operates according to its front panel controls.
(2) Remote Used in conjunction with the control line REN (Remote Enable) to
-
have the 5340A operate according to the information in its program storage
cells.
.
h. Reset Pushbutton/Power Up
When power is first turned on (Power UP) or the front panel RESET pushbutton is de-
pressed, the 5340A performs according to its front panel controls. However, it has stored
2-14
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Sample rate time is determined by the 5340A's SAMPLE
-
Is intended to be used in conjunction with the SAMPLE
Clears the display, initializes the phase locked loops and starts a new
The 5340A obeys the Reset instruction if addressed to
WAIT, the 5340A will stop at its output phase and
to
s o
stay