Digital Communications Interfaces ________________________________________________________
RF-MCGARDPRO
Hubbell Power Systems, Inc.
–
RFL™
Products
July 1, 2022
©2022 Hubbell Incorporated
7-41
7.6.2 Digital Comms Test
– Remote Loopback
Remote loopback is available for all digital interfaces. A remote loopback test directs the local
receive data to the local transmit path. This loops the data back to the remote terminal to help test
the complete communications circuit.
Figure 7-30. Digital Comms Test – Remote Loopback
7.6.3 Digital Comms Test
– Framer Loopback
A framer loopback is like a local loopback. Framer loopback is only available for T1/E1
interfaces. A framer loopback test directs the local transmit data to the local receive path at the