4-3
Front and Rear Panel
Front Panel Overview
3. Help Key
Press this hardkey for a short textual description of the function of the front panel
hardkeys and softkeys. Press any other key and you will be returned to normal
instrument operation.
4. Trigger Key
Press this hardkey to trigger a step or list sweep.
5. LF OUTPUT Connector
This female BNC connector is the output connector for modulation signals
generated by the LF source function generator. You can also output signals where
the frequency and shape are set by the internal source as it is being used by a
modulation. For pulse modulation, however, the internal source is a sinewave
which is later squared by the modulator to generate the pulse squarewave. This
output is capable of driving 3.5 Vpk into a 50
Ω load. If you configure your signal
generator with Option 1EM, this input is relocated to a rear panel, female BNC
connector.
6. Mod On/Off Key
This hardkey toggles all modulation signals on and off. Although you can set up
and enable various modulation states, the RF carrier is not modulated until
Mod On/Off is set to On. An annunciator is always turned on in the display to
indicate whether modulation is turned on or off.
7. RF OUTPUT Connector
This female Type-N connector is the output connector for RF signals. The source
impedance is 50
Ω. The damage levels are 50 Vdc, 50 W at ≤ 2 GHz, and 25 W at
> 2 GHz maximum. The reverse power protection circuit will trip, however, at
nominally 1 watt. If you configure your signal generator with Option 1EM, this
output is relocated to a rear panel female Type-N connector.
8. RF On/Off Key
This hardkey toggles the RF signal on and off at the RF OUTPUT connector. An
annunciator is always turned on in the display to indicate whether RF is turned on
or off.
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