Service Manual
UP4
M
IC
P
REAMPLIFIER
October 23, 2009
Fairlight UP-4 Mic Preamp
Page 8
8
GROUNDING
Pin 1 on all XLR connectors is audio 'signal' ground, which is connected to power and chassis
ground via a 10ohm resistor. This means that both grounds can be connected in an
installation without hum loops, and both should always be connected for safe operation.
Please contact Smart Research if you have any questions or problems:
www.smartresearch.co.uk
UP4 Operation Software revision 05C
Front panel LED's and Switch
The UP4 has four bi-colour LED's for level indication; one for each audio channel. Green indicates
an output level of -16dBu, and red +24dBu. Clipping does not occur untill the output exceeds
+28dBu, at any gain settings, and so in practice a red indication should give adequate warning of
overload. These four LED's are also used to display the network (or IP) address of the UP4.
The switch marked SET is used to change (and display) the IP address, and also to reset the
memory. Please see page two for the instuctions on how to change the address.
The last two LED's are used to display network status. D1 shows that there is a valid connection to
the control software and D2 shows that a control message has been received.
Resetting the UP4 to the factory default
This is achieved by turning the unit on while pressing the SET switch with a small screwdriver,
etc.
The switch can be released after ten seconds. The IP address will be reset to 10.1.1.15, and
the RAM memory cleared. This may be useful also in the case of clearing network errors, etc.
Network Installation, and Controllers
Currently, Fairlight's Dream Station or Smart Research's Soft Front Panel software running on
a PC or Mac can be used to control the UP4. The UP4 detects the first valid controller's IP
address on power up, and subsequently talks to that address. Therefore if a controllor's IP
address is changed, the UP4 will need to be turned off and on to adjust to the new address.
In some circumstances, the preamplifier might be co-resident on a network with another
device that may 'poll' its address, such as in the case of Fairlight's Media Server. If this is the
case, messages from another source other than a valid controller addressed to the UP4 may
possibly interrupt its control functions. We suggest you ensure the UP4's IP address is
excluded from the range set to be 'polled' by Media Server, and take care with other similar
devices you may wish to connect. Alternatively, you can move the UP4's address away from
any conflicting devices.
To setup UP4 operation on Dream II
Navigate to
C:\Program Files\Fairlight\FMC
