Purpose

The NBC SDSU Gen-2 electronics contains a power control board
When power is applied to the electronics, only logic-level
power is turned on. +/- 16V and +34V are not turned on or
applied to the CCDs. This is a safety precaution.

This script sends a keyword to the NBC VME system which
executes a server routine to send the "PON" command to the
SDSU electronics.

It checks the value of the +34V power supply first and
skips the modify command if this power is already on.

Usage

nbc_pon

Arguments

none

Exit values

0 = normal completion
-1 = error
error message logs to stdout