Signal Generator Overview
Front Panel
Chapter 1 7
7. Recall Key
This hardkey restores any instrument state that you previously saved in a memory register.
8. Trigger Key
This hardkey initiates an immediate trigger event, for a function such as a list or step sweep.
The trigger mode must be set to
Trigger Key prior to initiating a trigger event with this
hardkey.
9. Menu Keys
These hardkeys access softkey menus enabling configuration of list and step sweeps, utility
functions, the LF output, and various analog modulation types.
10. Help Key
Press this hardkey to view a short description of any hardkey or softkey. There are two help
modes available on the signal generator, single and continuous; single mode is the factory
preset condition.
• In single mode, when you press the
Help key, help text is provided for the next key you
press without activating the key’s function. Any key pressed afterward exits the help mode
and its function is activated.
• In continuous mode, when you press the
Help key, help text is provided for each
subsequent key press until you press the
Help key again or change to single mode. In
addition, each key is active, meaning that the key function is executed (except for the
Preset key).
Toggle between single and continuous mode by pressing
Utility > Instrument Info/Help Mode >
Help Mode Single Cont
.
11. EXT 1 INPUT (PSG-A only)
This BNC input connector accepts a
±
1 V
p
signal for AM, FM, and
Φ
M. For all these
modulations, ±1V
p
produces the indicated deviation or depth. When ac-coupled inputs are
selected for AM, FM, or ΦM and the peak input voltage differs from 1 V
p
by more than 3%, the
HI/LO annunciators light on the display. The input impedance is selectable as either 50Ω or
600Ω and the damage levels are 5 V
rms
and 10 V
p
.
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