Malvern Instruments Spraytec, User Manual

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TRIGGER INPUT , TRIGGER OUTPUT – these are general purpose
TTL ports. External devices can be connected to these to synchronise other
events with the Spraytec measurement.
There are two main uses for the TRIGGER input:
- To receive a signal from a cable-mounted manual trigger device.
- To receive a signal from an actuator or a fuel injection system, triggering a
Spraytec measurement.
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ACCESSORY COMMS – this is the port for connection of accessories
other than those connected to the above ports. The accessory must support
the
CAN Port protocol . This port could be connected to the Spraytec
NSS input or, for a fuel injection system, the input on a pressure sensor.
Multiple accessories can be connected in sequence to this output.
'
N o t e
. A USB error may be reported when in fact the USB cable is connected
properly, but one of the other cables is not connected. If such an error is
seen, check all cable connections.
.
Power switch
The mains power input is on the Transmitter. The push button on/off switch
toggles the system between its low power (standby) and fully on states. This
means there is always power supplied to the instrument. When the instrument is
switched on a blue light ring around the switch illuminates.
External PSU
To supply power to the instrument, an external autosensing switched mode 24V
PSU is used. This is connected to the
POWER 40W input on the back of the
Transmitter.
The power supply is fitted with a custom made connector cable with a special
connector for attaching to the Transmitter module. This cable is fitted with red
sleeves for identification.
C H A P T E R 3
S p r a y t e c
P a g e 3 . 7