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Installation
3.5 Electrical Connections
Electrical Connections are made at the rear of the instrument. See
Figure 3-2.
For safe connections, no uninsulated wiring should be able to come
in contact with fingers, tools or clothing during normal operation.
CAUTION:
USE SHIELDED CABLES. ALSO, USE PLUGS THAT
PROVIDE EXCELLENT EMI/RFI PROTECTION. THE
PLUG CASE MUST BE CONNECTED TO THE CABLE
SHIELD, AND IT MUST BE TIGHTLY FASTENED TO
THE ANALYZER WITH ITS FASTENING SCREWS.
ULTIMATELY, IT IS THE INSTALLER WHO ENSURES
THAT THE CONNECTIONS PROVIDE ADEQUATE
EMI/RFI SIELDING.
3.5.1 Primary Input Power
The power cord receptacle and fuse block are located in the same
assembly. Insert the power cord into the power cord receptacle.
CAUTION:
POWER IS APPLIED TO THE INSTRUMENT'S
CIRCUITRY AS LONG AS THE INSTRUMENT IS
CONNECTED TO THE POWER SOURCE.
THESTANDBY SWITCH ON THE FRONT PANEL IS
FOR SWITCHING POWER ON OR OFF TO THE
DISPLAYS AND OUTPUTS ONLY.
The universal power supply requires an 85–250 VAC, 47-63 Hz
power source.
Fuse Installation: The fuse block, at the right of the power cord
receptacle, accepts US or European size fuses. A jumper replaces the
fuse in whichever fuse receptacle is not used. Fuses are not installed at
the factory. Be sure to install the proper fuse as part of installation. (See
Fuse Replacement in Chapter 5, Maintenance.)
3.5.2 50-Pin Equipment Interface Connector
Figure 3-3 shows the pin layout of the Equipment Interface
Connector. The arrangement is shown as seen when the viewer faces the
rear panel of the analyzer. The pin numbers for each input/output
function are given where each function is described in the paragraphs
below.
Teledyne Analytical Instruments
Model 2120XL
20
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