Technical data

6
6-1
6Chassis Operations
This chapter describes the controls, indicators, and operating
procedures for the system chassis. Only those controls and
indicators that are part of the base system (i.e. the chassis) are
described here; many of the individual VMEmodules used in the
system are equipped with their own controls and indicators. For
information about the controls and indicators on the individual
VMEmodules, refer to the user’s manual for that module (see
Related Documentation in Chapter 1).
Controls and Indicators
The system is equipped with a key switch (two key switches in the
case of a dual 9-slot system) and three indicator lights to control and
monitor power to the card cage and fan. These controls, their
placement, and their functions are listed in the tables below.
Table 6-1. 3-Slot System Controls and Indicators
Control Location Function
Power/
Reset
key switch
Power supply
module, front
Turns the DC power to the system off and on.
Incorporates a Reset function to reset the system in
the event of a malfunction.
Removing the key locks the associated system in its
current state, either on or off.
Settings are Standby ( ), Power On (|), and Reset
(▲).
Status
LEDs
Power supply
module, front
Display the status of input power, operating voltages, and
enclosure temperature.
(Green, normally on) = −24/−48Vdc or 115/230Vac
(Green, normally on) = +5/+12/−12Vdc.
(Yellow, normally off) = Cooling failure.