2 31 4
B
A
V.54 Loop Detect
X.21 Selected
not selected
not selected
EIA-530 Selected
5 86 7
not selected
RS-232 Selected
not used
not used
not used
not used
not used
not used
not selected
V.54 Manual Loop
V.35 Selected
S1
S Lite
Quick Start Guide
45 - 00151
3. 0
POWER
S Lite
LOOP TEST
Tx DATA
Rx DATA
D
C
E
S1
POSITION 1
FUNCTION
POSITION 2
V.54 LOOP
POSITION 3
X.21
POSITION 4
EIA530
POSITION 5
POSITION 6-8
DETECT MODE
V.35
OFF
RS232
OFF
NOT USED
OFF
OFF
ON
POWER
D
T
A
E
B
MANUAL LOOP
ON
ON
ON
B
A
S1
1 2 3 4 5 6 7 8
O
N
Note: For more information about the S Lite,
see the reference manual, part number
34-00297, on the User Docu mentation CD or
at www.verilink.com.
Specifications
Interfaces
DCE: DB-25, female
DTE: DB-25, female
Performance Monitor
LED indicat o r s : Power, Loopback Active,
Loopbacks
Remotely Initiated: via standard V.54
Locally Initiated: via DIP switch
Configuration
Loopback Contro l: 1 position
Interface Control: 4 positions
Mechanical
Mounting: desktop or wall mount
Dim e n s ion s : 1.25" H, 3.5" W, 5.75" D
Weight: 1 pound
Power Source
Input: 90 – 256 VAC,
Output: 9 VDC
Industry Standards
Low Voltage Directive 73/23/EEC
EMC Directive 89 / 336/EEC
Environmental
Operating Temp: 0° to 50°C
Storage Temp: − 20° to 70°C
Humidity: 95% maximum
Tx Data, and Rx Data
commands
autoranging
(32° to 122°F )
(−4 ° to 158°F)
(non- condensing)
Wallmount Installation Using
Adhesive Strips
1 Select a place close to an AC outlet with
clearance for the signal and power cables.
The indicators and switches should be easi ly
accessible.
2 Verify the mounting surface is clean.
3 Cut the adhesive strip to the desired length
and affix the backing of one piece to the un-
derside of the unit.
4 Attach the other adhesive strip to the piece
on the underside of the unit.
5 Remove the backing to expose the sticky
surface.
6 Press the underside of the unit firmly against
the selected place.
Wallmount Installation
Using Screws
1 Select a place close to an AC outlet with
clearance for the signal and power cables.
The indicators and switches should be easi ly
accessible.
2 Vertical ly place two #6 screws 3-13⁄32
inches apart at the selected place. Leave the
screws out about an eighth of an inch.
3 Place the upright unit over the screws until
the holes engage and slide the unit do wn un -
til it locks.
Connections
DCE and DTE
Pin DCE and DTE Pin DCE and DTE
1 Shield Ground 14 T XD B
2 TXD A 15 TXC A
3 RXD A 16 RXD B
4RTS A 17RXC A
5CTS A 18LL
6DSR A 19RTS B
7 Signal Ground 20 DT R A
8 DCD A 21 RL
9RXC B 22DSR B
10 DCD B 23 DTR B
11 SCTE B 24 SCTE A
12 TXC B 25 TM
13 CTS B
Powe r
Plug the connector from the power supply in to
the unit. Plug the transformer into an appropriate outlet. This applies power to the unit.
Configuration
V.54 Annex B (RDL) Loop
Position 1 is used to set the unit to detect remotely initiated V.54 Annex B (RDL) loop
commands (A) or to manually initiate a loopback (B).
Interface
Positions 2, 3, 4, and 5 are used to select an interface.
Note: Only one of these switches can be in
position B at a time.
Note: Disconnect the DCE and DTE cables
from the unit before selecting an interface.
Not Used
Positions 6, 7, and 8 are not used.
Indicators
The unit indicators show power loop status,
and data activity.
Power
This green indicator shows that power is
applied to the unit.
Loop Test
This indicator show the loop status of the unit.
Amber indicates the unit is in loop mode.
When the indicator is Off, the unit is not in
loopback.
Tx Data
This green indicator shows the unit is transmitting data.
Rx Data
This green indicator shows the unit is receiving
data.
V.54 Annex B (RDL) Loop
Manual Loop
This loop
is activated by
setting DIP switch S1-1 to the B position. This
loop is unidirectional and returns the DCE receive data to the DCE transmit data. The loop
functions as shown above.
Detect Mode
This loop is activated by the receipt of the V.54
Annex B--commonly known as RDL--loop
command. This loop is u nidirectional and returns the DCE receiv e data to the DCE t ransmit
data. The loop functions as shown above.
The loop-up code is 2048 ± 100 bits of V.54
loop-up pattern. When this is detected, the unit
is looped. The loop-down code is 8192 ± 100
bits of V.54 loop-down pattern followed by 64
ones.
DTE
S Lite
DCE
Power Bypass
The S Lite can operate in a power bypass mode
where the S Lite passes the signal from the network to the equipment and vice versa whether
in a powered state or not.
The power bypass mode uses relays that switch
the network and equipment connections. When
the unit is powered and stable, the relays have
the network and equipment connections
switched into the S Lite’s internal circuitry.
When the unit loses power, the relays switch
the network connection to a direct connection
path to the equipment connection. When power
is reestablished the relays switch the network
and equipment connec tions back into the
S Lite’s internal circuitry.
Warranty
Verilink's product warranty covers repair or replacement of all equipmen t u nder normal use
for a five-year period from date of shipment.
Replacement products may be new or reconditioned. Any replaced or repaired product or
part has a ninety (90) day warranty or the remainder of the initial warranty period, whichever is longer. Our in-house Repair Center
services on a standard 10-workday-turnaround
basis.
Returning Products
A product must be assigned a Return Materials
Authorization (RMA) number before it is sent
to Verilink for repair. An RMA number is issued by Verilink Customer Service at (800)
926-0085, ex t. 22 82.
127 Jetplex Circle
Madison, Alabama 35758
(800) 837-4546
www.verilink.com
Technical Assistance Center
(800) 285-2755
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