To provide amplitude modulation of the output signal using a modulating signal from an external source, first set up the external signal generator and connect it to the MG362x1A rear panel AM IN BNC connector.
This menu contains the external AM status window showing the current menu selections and the measured AM Depth. The AM depth measurement function measures the voltage of the external modulation signal and calculates the percentage modulation value.
• Logarithmic: Displays the DEPTH button to set sensitivity in dB.
• Linear: Displays the DEPTH button to set sensitivity in %.
SENSITIVITY
Available when SOURCE is set to External. Numeric parameter dB/V is active when AM Type is Logarithmic. Numeric value %/V is active when AM type is set to Linear.
DEPTH
Numeric parameter dB is active when AM Type is Logarithmic. Numeric value %/V is active when AM type is set to Linear.
Setting STATE
Press STATE to switch AM on and off. The External AM status display will display as External On or Off.
Note
ERR
This error message is displayed when the external AM modulating signal exceeds the input voltage range. The message “Reduce AM Input Level” also appears at the bottom of the AM status display. AM is turned off until the modulating signal is within the input voltage range.
Setting SENSITIVITY
Press SENSITIVITY to open the AM Sensitivity parameter, then edit the current value using the cursor control keys, rotary data knob, or enter a new value using the keypad and the appropriate terminator key. The AM Sensitivity range is 0 %/V to 100 %/V in Linear and 0 dB/V to 25 dB/V in Log. To close the open AM Sensitivity parameter, press SENSITIVITY or make another menu selection.
Setting DEPTH
Press DEPTH to open the AM Depth parameter, then edit the current value using the cursor control keys, rotary data knob, or enter a new value using the keypad and the appropriate terminator key.
