Apex Digital 5708009-C manual Overtemp

Apex 1 to 5.5 kW Generator

Table 4-1.User Port 25-Pin APEX Standard Pin Descriptions (Continued)

Signal	Return	Name	Signal	Description
Pin	Pin		Type
7	20	DC BIAS INPUT	Analog	This pin is used in conjunction
			input	with signal pin 6 to allow the
				generator to regulate its power
				based on an external feedback
				signal. This User defined 0 to 10
				V signal provides an input which
				you can use for closing the
				power control loop around
				external components in the RF
				path. Usually used for bias
				regulation with this input signal
				being a scaled representation of
				the dc bias measured at match
				network.
				See Wiring Diagram 4-4.
				Note: When using this
				regulation feature, the
				setpoint must be given at
				pin 5 (SETPOINT).
				Setpoints cannot be
				established through the
				serial interface at this
				time.
8	21	FWD/LOAD PWR	Digital	Applying a positive dc voltage
		REGULATION	input	between 4 and 30 V to this pin
				causes the generator to regulate
				on load power. No connection to
				this pin causes the generator to
				default to forward power
				regulation.
				See Wiring Diagram 4-7.
9		OVERTEMP	Digital	See Signal pin 22
		RETURN	Output
10	23	INTERLOCK LOOP		This pin when connected
				externally to pin 23 closes the
				interlock and allows the RF
				output to be enabled.
				See Wiring Diagram 4-12.

5708009-C 4-7