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Connectors
RELAY/TTL
TTL inputs control the following detector functions: autozero (TTL1), UV lamp
on/off (TTL3), and visible lamp on/off (TTL4). The TTL2 input is reserved.
The two TTL outputs and two relay outputs can be programmed as part of a
Chromeleon 7 instrument method or Chromeleon 6.8 program (see
or controlled manually in the software. The relay outputs can be programmed to
switch any low-voltage control. The switched current must be less than 200 mA
and 42 V peak.
The Dionex PDA Ship Kit (P/N 060977) includes a 12-pin connector
(P/N 923686) for relay and TTL connections. For installation instructions, see
Section
B.6.
USB Connector
The USB connector allows communication between the Dionex PDA and the PC
on which Chromeleon is installed. The Dionex PDA Ship Kit (P/N 060977)
includes one USB cable (P/N 063246). For installation instructions, see
Section
B.7.4.
Power Entry
The Dionex PDA power entry is socketed for a modular power cord (IEC 320
C13). The detector operates from input voltages over a range of 85 to 265 VAC,
47 to 63 Hz power, and requires a grounded, single-phase power source. The
typical input power is 100 W and the maximum line draw is 3.5 amps at 110 VAC
(when the detector power is turned on). The appropriate line voltage and
frequency are selected automatically.
NOTE Always leave the main power switch on unless instructed
SHOCK HAZARD—To avoid electrical shock, use a grounded
receptacle. Do not operate the Dionex PDA or connect it to AC power
without an earthed ground connection.
The power supply cord is used as the main disconnect device. Make
sure the socket-outlet is located near the Dionex PDA and is easily
accessible.
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to turn it off (for example, before performing a service
procedure). Use the power button on the front of the
detector for routine on/off control.
2 • Description
Section
3.3.2),
23
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