HP 3336A Operating Manual page 23

Operation
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POWER Switch. Applies power to the instrument in ON
position. In STBY (standby), applies power to the High
Stability Frequency Option (option 004), maintaining
the instrument in a ready state. (Paragraph 3-6)
BLUE Shift Key. Causes some keys to change to secon-
dary functions printed in blue. The front panel ''shifts''
back to primary functions after the next key is pressed.
SWEEP Group. Contains entry keys for entering sweep
parameters, plus sweep start/stop keys. When preced-
ed by the BLUE Shift Key, the entry keys become sweep
modification keys, the TIME key selects Linear/Log
sweep, and the SINGLE sweep start/stop key selects
Fast/Slow internal leveling. (Sweep, Paragraph
3-60/Internal leveling, Paragraph 3-49)
LOCAL Key. Switches the instrument from remote to
local (front panel) control unless a Local Lockout state-
ment was executed. When preceded by the BLUE Shift
Key, displays the HP-IB address in decimal code.
(Paragraph 3-112)
strument's HP-IB status: REMOTE; Service Request
(SRQ); Addressed to TALK; Addressed to LISTEN.
(Remote Programming, Paragraph 3-103)
ENTRY Group. Prefix keys for the major operating
parameters. When one of these keys is pressed, the
selected parameter is displayed and can be changed us-
ing the Modify Controls or the Number/Units Keyboard.
(Paragraph 3-31) When preceded by the BLUE Shift
Key, the PHASE key assigns zero degrees phase to the
present output. (Paragraph 3-57)
ALPHANUMERIC Display. Displays the values of the
operating parameters, programming error codes, HP-IB
address, and ''OSC FAIL"' if the internal oscillator is not
operating properly. (Error Codes, Paragraph 3-36)
Group. Indicates the in-.
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Model 3336A/B/C
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DATA Group. Contains a Number/Units keyboard to
exactly set the value of a selected parameter.
(Paragraph 3-33) Also included are keys to STORE and
later RECALL the operating state of the instrument.
(Paragraph 3-94) When preceded by the BLUE Shift
Key, the MHz units key selects the Amplitude Blanking
operation mode, and the kHz/SEC key returns the instru-
ment to normal operation mode. (Paragraph 3-54) The
STORE, RECALL, CLEAR, and — keys become the
Amplitude or Phase modulation ON/OFF controls.
(Paragraph 3-85/90)
MODIFY Group. Consists of a Modify ON/OFF Key,
two Horizontal Arrow keys to move the digit to be
modified left or right, and a Tuning Knob to increase or
decrease the selected (flashing) digit. (Paragraph 3-35)
UNITS Annunciators. Indicates the units of measure-
ment of the displayed value. The ENTRY Annunciator
lights when an entry is in progress.
OUTPUT Group. Main Signal Outputs and Output
Select Keys to activate an output port. Output Select
Keys automatically deactivate all other output ports in
this group.
MODULATION STATUS Annunciators. Appropriate an-
nunciator lights when Amplitude or Phase Modulation is
enabled. (Paragraph 3-85/90)
EXT REF Annunciator. Lit when an external frequency
reference is connected to the EXT REF Input. Flashes if
the instrument does not lock to the external reference.
(Paragraph 3-23)
Figure 3-1. Panel Features.