USER HANDBOOK
5-6
5.2.6 Microswitches
The GDU
net
contains two (2) contact microswitches located
inside the instrument hood, as illustrated in Fig. 5-7.
The purpose of these microswitches is as follows:
MICROSWITCH (1)
: Detects when an instrument has been
correctly located in the tray and activates the ‘Switch ON’ LED
on the GDU
net
front panel.
MICROSWITCH (2)
: Detects instrument type. The instrument
type determines whether communications are via the optical
port or IrDA window.
• Optical comms when microswitch 2 is activated.
• IrDA comms when microswitch 2 hasn’t been activated.
Fig. 5-7 Microswitches
MICROSWITCH (1)
Detects instrument
inserted in tray
MICROSWITCH (2)
Detects instrument type for
automatic communications
selection
(IrDA or com port)
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