UG-1037
ePAQ-9100
14
Hardware Overview
Copyright © 2017 QEI
Electronic Devices (IEDs). This port conforms to the RS-485 specification and is
suitable for direct wiring with external IEDs. High-speed opto-couplers provide
isolation, while fast Schottky, Zener diodes, and surge-suppressing capacitors
clamp any input voltage transient and noise to chassis ground.
This port is capable of supporting multiple devices over a single twisted pair of
wires. The choice of IED communication protocols is entirely under software
control. These ports also have TX and RX communication status LED’s located
on the ePAQ-
9100’s front panel.
3.2.5
Port #6, #7, #8 (RS-232)
These ports are RS-
232 ports normally used to communicate with IED’s. The
ports can be configured to handle any mode or protocol supported by the ePAQ.
DB9 Female connectors are used for connections to an external communications
device, such as an RS-232 to fiber optic converter. These ports have TX and RX
LEDs for communications status on the ePAQ-
9100’s front panel.
3.2.6
Port #6, #7, #8 (RS-485)
These ports are RS-485 ports normally used to communicat
e with IED’s. The
port can be configured to handle any mode or protocol supported by the ePAQ.
These ports conform to the RS-485 specification and are suitable for direct wiring
with external IEDs. High-speed opto-couplers provide isolation, while fast
Schottky, Zener diodes, and surge-suppressing capacitors clamp any input
voltage transient and noise to chassis ground. Terminal blocks are used to
provide connections to external devices.
NOTE
Ports 6, 7 and 8 can be either RS-232 or RS-485 connections to external devices but
not both simultaneously.
3.2.7
Port #9
This port is RS-
232 and is normally used to communicate with IED’s. The port
can be configured to handle any mode or protocol supported by the ePAQ.
A DB9 Female connector is used for connection to an external communications
device, such as an RS-232 to fiber optic converter. This port has TX and RX
LEDs for communications status on the ePAQ-
9100’s front panel.
3.2.8
IRIG-B Interface
The ePAQ-9100 supports the IRIG-B format in one of two distinct forms. A
transformer coupled analog input channel (amplitude modulated time sync
packets), or a serial input channel (a digital representation of the signal at RS-
422 levels). The analog format signal is connected via a BNC connector and the
RS-422 digital signal is connected via the 4 pin terminal block.
3.2.9
Ethernet Interface
The ePAQ-9100 can also support two Ethernet interfaces, 10/100 Base T(X) or
100 Base FX. Each connection can support both TCP/IP and OSI.