Subject to Export Control, see Cover Page for details. 2-3
2-1. OPERATOR’S CONTROLS, INDICATORS AND CONNECTORS (cont)
ITEM DESCRIPTION
DC IN Connector Used for operation of the 3500 / 3500A or battery
charging.
Display (LCD) Used for viewing menus and screens. Soft Key boxes
appear at the bottom of the menus/screens.
DVM Connector (3500A only) Provides DC coupled input for the Audio Level Meter
and the Oscilloscope (Option) functions.
FAULT Indicator Illuminates when a fault exists in the 3500 / 3500A:
YELLOW Caution Condition exists
RED Warning Condition exists
Multi-Function Soft Keys Five Soft Keys are provided. The legends are
displayed in boxes at the bottom of the Display.
Number Keys Used for data entry or to select a numbered item.
Alternate key functions are utilized when selecting file
names in the Save Screen.
POWER Indicator Illuminates when the 3500 / 3500A is powered up.
POWER Key Used for powering the 3500 / 3500A ON and OFF.
REMOTE Connector (External I/O) Used for communicating with external equipment.
SWR Connector Used for measuring the VSWR of Antenna systems.
Also used as a transmit signal output.
T/R Connector Used for high power direct connection to radio
equipment.
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