Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
LOOPBACK LOGIC
The T1/E1 transmit and receive interface circuits are interconnected by loopback logic inside the Actel 1280XL.
The equipment loopback causes the data received from the user equipment to be read into a buffer and then
retransmitted back to the user equipment. The payload loopback places the T1/E1received data into a buffer and
then retransmits it via the T1/E1 transmit circuit. Synchronizing circuits in the loopback logic compensates for
varying phase relationships between the T1/E1 transmit and receive bus signals. A three position switch on the
module front panel enables the user to select equipment loopback, payload loopback or no loopback.
NOTE
If this unit is used for protective relaying applications, disable the protection equipment
at both ends before using equipment loopback or pay
l
oad loopback m
odes.
ALERTS AND ALARMS
If payload loopback and equipment loopback are enabled, the DS-562I will issue a module level alert signal to
the shelf common module.
If addressing is enabled and there is a loss of addressing, the DS-562I will issue a module level alert signal to
the shelf common module.
REMOTE CONTROL INTERFACE
When the RFL DS-562I is installed in an IMUX 2000 multiplexer, it can be operated under local or remote
control. When under remote control, most of the module setup parameters can only be changed through the RS-
232 remote port on the shelf Common Module. See the IMUX 2000 manual for information on using the remote
control interface.
The remote control interface for the RFL DS-562I involves two sets of codes: “P” (parameter) codes, and “S”
(status) codes. The RFL DS-562I reports itself as a “
Type 119
” module.
“P” CODES
“P” codes, when used in the parameter field on an SCL “SET” command, allow the user to set certain
parameters on the RFL DS-562I by remote control, just like setting DIP switches on a module under local
control. “P” codes also appear in the response to a “CONFIG?” query, providing a list of the RFL DS-562I
current parameter settings. A typical RFL DS-562I response to a “CONFIG?” query looks like this:
*OK
CHANNEL CARD 3, TYPE 119
UNDER REMOTE CONTROL
SRVC = ON
P01 = 13 (B00001101)
P02 = 0 (B00000000)
P03 = 0 (B00000000)
P04 = 190 (B10111110)
P05 = 0 (B00000000)
There are five “P” codes for the RFL DS-562I; “P1” through “P5”. Each “P”code is displayed as a decimal
number from 0 to 255, followed by its eight-digit binary equivalent in parenthesis. Table 14 lists the meaning of
all “P” codes for the RFL DS-562I module.
RFL DS-562I RFL Electronics Inc.
June 14, 2007 33 (973)
334-3100
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