Most CPS matching networks are equipped
with an analogue remote control facility. This is connected via a 15 way D
connector, and the pin out is common across nearly all models.
Description
Of Remote Connections / Functions.
-
Remote LOAD base position. This is
enabled by grounding pin 12. A voltage of 0 to 5v sets the base position of
the Load capacitor with 0v giving minimum capacitance and 5v giving maximum
capacitance.
-
Remote TUNE base position. This is
enabled by grounding pin 12. A voltage of 0 to 5v sets the base position of
the Tune capacitor with 0v giving minimum capacitance and 5v giving maximum
capacitance.
-
TUNE Position. Pin 3 is an analogue output voltage 0-5 volts representing
tune capacitance. This output can source 5mA.
-
LOAD Position. Pin 4 is an analogue output voltage 0-5 volts representing
load capacitance. This output can source 5mA.
-
Not Used.
-
BIAS. Pin 6 is an analogue output
giving the bias voltage scaled to -5v for a bias of -2000v. This pin is
buffered and may be connected to the bias input of a RFG.
-
Ground
-
Ground
-
Return to base Indicator. Pin 9 is an open
collector transistor that grounds when no RF is detected. This can sink 45mA 20V.
-
Not Used.
-
Not Used.
-
Enable Remote control. Grounding this
pin enables remote base position control via pin 1 and pin 2.
-
Not Used.
-
Return to base Indicator. Pin 14
duplicates pin 9
-
+5V. This is a +5V 500mA Output, useful
for lighting LEDs or powering simple adapters.
