CDX2000 / 13.56 MHz & 400 kHz Manual
© 2006 Comdel, Inc.
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output of one side is enabled the letter H (HF) or L (LF) will blink and the green LED on the RF ON
button will illuminate.
7.
In local mode the display will show which RF output is currently controlled from the front panel in the
upper left corner. The default is “HF” for the 13.56 MHz output. To switch to the “LF” 400 kHz
output press the mode button (>>) once. The forward power, reflected power and setpoint of the
output under control are displayed. The setpoint is adjusted by turning the encoder. The output
frequency of the LF side is displayed above the setpoint. In the LF mode pressing the select button
(>) will switch the generator to manual frequency control. The display will change from AFC (auto)
to MFC (manual) and turning the encoder will now adjust the frequency of the LF output. Pressing
the select button (>) again will change the LF output back to auto tune.
8.
Enable RF by pushing the blue RF button on the left side of the front panel. The RF button LED
should illuminate, the display will flash 'RF', and readings of forward and reflected power should
appear. If the display shows 'CHECK RF INTERLOCK', this means that the RF enable Pins 4 and 9
of the appropriate rear panel connector are not connected.
9.
RF is disabled by pushing the RF button again, by removing RF interlock by disconnecting Pin 4 and
9 of the appropriate rear panel connector, or by interrupting the AC mains via the AC interlock loop,
the stop softkey, or the circuit breaker located on the rear panel.
10.
The CDX2000 regulates forward power based upon the setpoint selected by the large data encoder
knob on the front panel.
11.
An overtemp condition due to improper clearance around the unit or high ambient temperature will
automatically disable both RF outputs on the CDX2000. The front panel display will show
'OVERTEMP'. RF will not be able to be turned on until proper coolant flow/temperature is
established.
B. Remote Control Operation
1-4. Refer to Control pinout and signal table for the electrical interface specifications. For remote control
operation follow the first four procedures for local control as listed above.
5.
Remote operation is the power-up default mode. If the current mode of operation is local, then
double-push the mode button (>>) until the display shows 'RM' in the upper left corner OR restart
the unit by turning AC off then back on.
6. Either RF output is enabled by a contact closure between RF ENABLE Pins 4 and 9 of the
appropriate rear panel connector. The RF button should illuminate, the display flash 'H', 'F', or both,
and readings of forward and reflected power should appear.
7. The voltage on Pin 5(+) and 6(-) of the P1 and P2 connectors will determine the output power level
of each of the generator outputs. A voltage of 0 to 10 volts DC across Pins 5 and 6 (chassis ground)
will linearly correspond to an RF output of 0 to 1000 watts.
8. Reflected and forward power can be monitored remotely through Pins 2(+), 6(-) and 3(+), 6(-)
respectively on each connector. Both of these balanced analog outputs are 0 to 10 VDC linearly
corresponding to 0 to 1000 watts of forward or reflected power.
9. An overtemp condition as stated in #11 above in local will also result in the 'closure' of the
OVERTEMP DIGITAL OUTPUT, Pins 8(+) and 9(-) (chassis ground) of both rear panel I/O
connectors.
10. When RF is present at either RF output connector, the POWER ON DIGITAL OUTPUT, Pin 7 of the
appropriate rear panel connector will be at approximately 5V.
