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Installation and
Initial Checks
2.1 Installation
2.1.01 Introduction
2.1.02 Rack Mounting
2.1.03 Inspection
2.1.04 Line Cord Plugs
2.1.05 Line Voltage Selection and Line Fuses
Installation of the model 7124 is very straightforward. The main console can be
operated on almost any laboratory bench or be rack mounted, using the optional
accessory kit, at the user's convenience, while the remote connection unit
(7124 RCU) is compact enough to be located close to the experiment. With an
ambient operating temperature range of 0 C to 35 C, both units are highly tolerant
to environmental variables, needing only to be protected from exposure to corrosive
agents and liquids.
The main console uses forced-air ventilation and as such should be located so that
the ventilation holes on the sides and rear panels are not obstructed. This condition is
best satisfied by leaving a space of at least 2" (5 cm) between these panels and any
adjacent surface.
The 7124 RCU does not use cooling fans and therefore simply needs to be located so
that there is a free flow of air around the unit.
An optional accessory kit, part number K02005, is available from
SIGNAL RECOVERY to allow the model 7124 main console to be mounted in a
standard 19-inch rack.
Upon receipt the model 7124 Lock-in Amplifier should be inspected for shipping
damage. If any is noted, SIGNAL RECOVERY should be notified immediately and
a claim filed with the carrier. The shipping container should be saved for inspection
by the carrier.
Both the main console and the 7124 RCU are fitted with standard IEC 320 sockets
on their rear panels and suitable line cords are supplied.
Before plugging in the line cords, ensure that both the main console and the 7124
RCU are set to the voltage of the AC power supply to be used.
A detailed discussion of how to check and, if necessary, change the line voltage
setting follows.
CAUTION: The model 7124 main console and 7124 RCU may be damaged if the
line voltage is set for 110 V AC operation and they are turned on with 220 V AC
applied to the power input connector.
The model 7124 main console and 7124 RCU can operate from any one of four
different line voltage ranges, 90-110 V, 110-130 V, 200-240 V, and 220-260 V, at
50-60 Hz. The change from one range to another is made by repositioning plug-in
2
Chapter
2-1
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