Displaying Voltages

The high voltaged control interface allows the user to display and page through all the values associated with the 1440 mainframes. To display the information on the current mainframe use the ``(D) Display Voltages'' option from the main menu. This option will query the mainframe and load up a display showing all the high voltage channels for the current mainframe.

The display lists one high voltage card at a time and will cycle through all 16 cards. If a slot on the 1440 does not contain a 1443 or 1444 high voltage card the display will skip that position and display the next non-empty high voltage card slot.

The display for each card lists:

• The high voltage card number
• The high voltage card channel number
• The requested programming voltage (or ``No Prog'' if not loaded)
• The actually value stored in the demand register of the 1443/1444
• The backup voltage value (or ``No Prog'' if not loaded)
• The REAL voltage as read back by the 1440
• The administrative MAXIMUM voltage allowed on this channel
• The current power state of the channel
• The group owning this channel

The power state will display one of the following values:

• OFF - The channel is turned off
• ON - The channel is turned on
• TRIP - The channel has tripped
• OV - The channel is over voltage
• UV - The channel is under voltage
• OCRIT - The channel is critically over voltage
• UCRIT - The channel is critically under voltage

For 1444 high voltage cards additional information is displayed including:

• The DC current read back for channels 0-7
• The AC current limit for channels 0-7
• The DC current limit for all channels on the card
• The programmable voltage ramp rate for all channels on the card

Updates are performed automatically each time the display window is requested. To manual force an update of this information use the ``(U) Update Real V'' command.