User`s guide

Configure RI Power
84 Chapter 8 Configure Power Over Serial Ports
Configure RI Power
RI Power In
Ring Indicator (RI) power in accepts power into the Digi device only on port
one. Power in is available using the RI pin. The Digi device requires power
in the range of 9-30 VDC @ 525mA (max). Ports 2, 3, and 4 can still supply
power to a serial device through the RI or DTR pins for each port. When
using power in through the RI, the external power supplies (both powered
Ethernet and the barrel connector power supply) are inoperative. Altpin will
not work for RI power in.
1. Open the device case and move the black jumper to the following
settings:
P-6 jumper on pins 1 and 2
2. Close the device unit enclosure.
RI Power Out
Ring Indicator (RI) power out is available on all ports. The total power
budget for this feature is one (1) watt not to exceed 5 volts @ up to 200mA
on any single port. The following procedure assumes the unit will only be
used for RI power out.
1. Set the port DIP switches to the following places: switch 1 and 3 are up
and 2 and 4 are down (see "Serial Power Table" on page 86 for
illustration).
2. Enable the RI power through the web interface.
3. Connect power supply with the barrel-connector power supply provided
with the device or use powered Ethernet.
Note: If the unit will be used with RI power in (port 1 only), set the
jumper to the following setting:
P-6 jumper on pins 1and 2
and do not use an external power source. Port 1 cannot be used for
both power in and power out.
Note When the jumper is placed correctly
for power in, the jumper will set on
the pins closest to the edge of the
board. The left arrow indicates the
open pin and the right arrow is
pointing to the jumper.