Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL DA-291B RFL Electronics Inc.
April 13, 2010 8 (973) 334-3100
Table 2. Controls and indicators, DA-291B
Item Name/Description Function
1 LED indicator Indicates the status of channel 1 thru 4. As shown in Figure 2.
No channel LED lit – The channel is disabled.
TX and RX are both RED – Fram
er i
s not synchronized for that channel.
TX and RX are both GREEN – Framer i
s synchronized but no data
transfer.
TX and /or RX ORANGE – Data transfer occurring. No data transfer LED
rema
ins GREEN.
All 3 LEDS blinking RED – If occurring for 1 channel
indicates a setting
problem for that channel. If occurring for more than I channel could
indicate an overlap of setting.
Loopback indication:
ORANGE – Loopback active for that channel.
No illumination – Loopback is not active for that channel.
2 Piano Switch SW11 Sets loopback to either Remote or Local mode for the required channel.
Default is OFF – UP (See Table 5).
SW10-1 thru SW10-4
Enables channel 1 thru 4, set to DOWN to enable the required channel.
SW10-5 thru SW10-6 not used.
SW10-7
Selects Local or Remote mode
UP: Local
(Set
tings obtained from DIP switches)
DOWN:
Remote (Settings obtained from SCB)
3 Piano Switch SW10
SW10-8
Sets service ON or OFF
UP: Service ON (board enabled)
DOWN:
Service OFF (board disabled)
4 LED indicator (green) Indicates Module Service.
LED lit – the module is enabled and functional.
LED not lit – the module is not enabled or is enabled but not functional.
SW1-1 thru SW1-6
Sets the SCB address (See Table 6).
SW1-7
For factory test use only, would normally be set to OFF.
5 DIP Switch SW1
SW1-8
Set to 2 or 4 port operation.
OFF: Two port (default)
ON:
Four port
SW2-1 thru SW2-2, SW3-1 thru SW3-2, SW4-1 thru SW4-2 and SW5-1
thru SW5-2 not used.
6
DIP Switch SW2 thru
SW5 channel switches
SW2-3
TERM:
ON: Sets the module to operate via the DI-A port in a
dr
op/insert multiplexer, or operates in a terminal
multiplexer. (TX on A, RX on B)
OFF:
Sets the module to operate via the DI-B port in a
drop/insert multiplexer. (TX on B, RX on A)
Continue to set SW3 thru SW5 as required.
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