Alternative Port Capabilities
44
MRV Communications, Inc.
www.mrv.com
451-0308
•
The states are
undefined
upwards of 30 S the
Boot
Delay Timer
value in some
configurations, i.e. the signals are non-latching through power cycles.
•
Note that negative voltage could be present on the interface until the software is completely
initialized.
•
Control Outputs in the LX-Series guarantee ±5.0V drive into a 3K Ohm load.
•
External loading below 3K Ohm can be tolerated but under no circumstances should the device
load the LX-Series output below ±2.5V/7.6mA absolute maximum drive.
•
A common Signal Ground is required.
•
The MRV Corporation IR-7104 family can provide true Form C SPDT Relay outputs rated to
30VDC/1A per contact if higher capacity and stable contacts are required through restart and
power cycles.
Figure 21 - Typical Interface Design for Control Output Signals
You must change the LX-Series port
access
type
to
control
to utilize DTR and RTS as the Control
Outputs. For example:
InReach:0>>
config port async # access control
If you want the DTR signal to be asserted High (positive voltage) on the port:
InReach:0>>
control port async # dtr high
Refer to the
LX-Series Configuration Guide
for a detailed explanation of the commands to set up a
port in the Control function.
