User's Manual

Vanguard 3G
CONFIGURATION
001-7000-100 Version 2 Page 54 of 66 Vanguard 3G User Manual CDMA
Version
Table 6 - I/O Signal Specifications
5.11.1 Debouncing
All analog and digital input signals are debounced for 500ms. Generation of all alarms and
indications is subject to a 500ms debouncing.
5.11.2 I/O Configuration
The Vanguard 3G I/O subsystem is configured via the Vanguard 3G WEB pages. Status Monitoring
is provided via NMEA-based protocol. The Vanguard 3G I/O subsystem operates according to a
manager/agent model. The PC-hosted manager sends requests to the Vanguard 3G I/O agent,
which performs the required actions. The Vanguard 3G agent reports alarms and indications to the
PC-hosted manager.
Input Type Label Specification
Analog Input AIN1…AIN4 External input voltage range:
0 to+28 Volts
Digital Input DIN1…DIN4 Logical level inputs, Schmitt-trigger
Positive threshold voltage: 2.2V max
Negative threshold voltage: 0.6V min
Maximum input voltage: 5.5V
General Purpose
External Digital
Outputs
NO1-COM1
NO2-COM2
NO3-COM3
NO4-COM4
The default Vanguard 3G power-up
state for each relay is open (no contact
between COM and NO output lines)
Nominal Switching Capacity (resistive
load) 1A, 30VDC
Preliminary