Dimmer Operation 4-6
Revision 2 - 26 April, 2000 HP SERIES DIMMER TECHNICAL MANUAL
4.1.4.6 “TERM” DMX Signal Terminate
(
Figure 4.1B
Selecting “TERM” allows the DMX signal to be correctly terminated, as is
required for the last dimmer in a DMX line. Note that when set to “ON” the DMX
Loop connector in unused.
Pressing the NORMAL button on the keypad will change the display to “OK” to
indicate the dimmer is now in normal operating mode.
4.1.4.7 “CHEK” dimmer operating parameter display
(
Figure 4.1B
Selecting “CHEK” displays the dimmer’s operating parameters on a channel by
channel basis. This is useful for checking that a dimmer has been setup correctly.
Select the channel to be checked by turning the FUNCTION encoder wheel (the
STATUS LED of the channel being checked will flash). Stop the scrolling of the
display at any time by pressing ENTER. Press ENTER and turn the encoder wheel
at the same time to display information “vertically”, ie. display the same information
for different channels.
Pressing the NORMAL button on the keypad will change the display to “OK” to
indicate the dimmer is now in normal operating mode.
Normal DMX operation of the dimmer is unaffected by selecting this function.
4.1.4.8 “V.COM” Output voltage Compensation
(
Figure 4.1B
An HP dimmer can be setup so that it will compensate for variations in the mains
input voltage. Selecting “V.COM” allows the internal voltage compensation to be
turned on or off, or calibrated. After a Deep Clear, V.COM defaults to Off.
•
Selecting “V.COM” gives the options of “ON”, “OFF”, “LINE” and
“MAX”. Use the FUNCTION encoder wheel to choose the desired option and
press ENTER to confirm selection. Selecting “LINE” allows calibration for the
voltage compensation, while selecting “MAX” allows setting of the maximum
output voltage the dimmer regulates to.
When “ON” or “OFF” has been selected:
The display will change to “OK” to indicate the dimmer is now in normal operating
mode with the selected change implemented.
When “LINE” has been selected:
•
Note that an external voltmeter is necessary to complete this procedure.
This parameter should not need to be adjusted during normal operation.
Adjust the displayed voltage using the FUNCTION encoder wheel until it reads
the same as the current input voltage, as displayed on the voltmeter. It is
recommended that all phases be driven from a single phase source eg. via a
single to three phase adaptor, to eliminate phase voltage variations.
•
Press ENTER to calibrate the dimmer.
•
The display will change to “OK” to indicate the dimmer is now in normal
operating mode with the selected change implemented.
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