11.2 LAN connector
RJ-45 bus for serial instrument control over LAN:
• Network configuration of Xport via Lantronix device installer software utility
• Fixed communication baud rate: 921600 bps
• Communication over LAN is used for parametric instrument control and data acquisition
• 10Base-T or 100Base-TX (Auto-Sensing) serial-to-Ethernet connectivity
Note:
To establish communication over LAN, the LAN cable must be connected when starting
the detector using the main power switch on the rear panel. If no communication cable (either
LAN or USB) is connected during startup, communication via USB is enabled (default).
Consult the installation section for details on configuration and setup of communication over LAN.
11.3 Digital I/O connector
The detector has one 25-pin digital I/O connector, the XE "digital I/O connector", which enables
control of (or by) external equipment. The I/O connector contains 18 TTL contacts (5 outputs and
13 inputs, 3.3 V CMOS logic), 2 RELAYS (contact closure), and 1 ground (GND connection).
11.3.1 TTL inputs and outputs
TTL inputs and outputs are default = high (3.3 Volt). The TTL inputs are level-triggered; the
contacts require a minimum TTL-low pulse duration of 100 ms. If multiple activations are
required, the next pulse should be given after 100 ms TTL high. When the input is kept low, only
one activation occurs.
11.3.2 Relays
The 3465 Detector has two freely programmable contact closure outputs:
• Relay1: pin 1 normally closed, pin 2 normally open, pin 3 common
• Relay2: pin 4 normally closed, pin 5 normally open, pin 6 common
The maximum rating for these contact closure outputs is 24 VDC (switching voltage) and 0.25 A.
December 16, 2021, 715007395 Ver. 00
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