eDAQ PowerChrom 280, Руководство пользователя

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6 PowerChrom
Serial Port
The serial port is for factory diagnostic use only. It should NOT be
connected to your computer.
Power Connections
The power switch is used to turn the unit on and off. The 3-pin IEC
power socket is used to connect your recording unit to a 3-pin earthed
(grounded) power cable. Do not use 2-pin (unearthed) power sockets or
adaptors. The PowerChrom unit is a universal input switching power
supply can be used with AC supplies of 90 – 250 V at frequencies of
50 or 60 Hz.
The Instrument Connection Port
All the connections that the PowerChrom recording unit uses for signal
measurement and control are made through the single 20 pin
Instrument Connection port,
Figure 1–3 , on the back panel, which
provides:
• inputs for two analog signal inputs, differential or single–ended
(CH1 and CH2);
• one analog output (DAC);
• an input for a digital inject signal input (TRIG); and
• four digital control outputs (CTL1, CTL2, CTL3, and CTL4) to
control external equipment (either contact closures or TTL levels,
configured by links).
A plug-in terminal block adaptor, Figure 2–2, page 12 , is provided for
easy connection of bare wires. Refer to Chapter 2 for details of
connecting equipment.
Detector Inputs
The PowerChrom unit has two independent detector input channels that
are used to record external analog signals from attached detectors.
Each input can be set up as differential (with the difference between the
positive and negative inputs recorded), or single-ended (with the
negative input referenced to ground).
▲
WARNING!
Failure to ensure
adequate earthing of the
PowerChrom unit results
in unsafe operation. Two
pin (unearthed) power
outlets, or adaptors, must
NOT be used.