INSTALLATION & SET-UP
13
3 INSTALLATION & SET-UP
3. 1 Setting-up the Bit-switches
It is recommended that the two sets of 8-gang bit-switches labelled SW1 and SW2 on the
base of the unit are set-up before making any connections to the unit. There is an
explanatory label on the unit’s base which defines the bit-switch set-up options and alarms.
Serial No:
DC3X00 BNC/RJ45 E1 DSU
Build Rev: 72-01-380-3 X.21
Build Rev: 72-01-380-4 V.35
1
0
For product manual
and other information:-
www.metrodata.co.uk
Metrodata Ltd
TW20 8RY UK
Tel +44 (0) 1784 744700
Fax +44 (0) 1784 744730
SW1
SW2
16 8 4 2 1
START T/S
16 8 4 2 1
BANDWIDTH
SW1
SW2
17-08-115C
CLOCK SELECT
INT
TERM
LOOP
BYP16 CRC4
ON
OFF
SELECT
RJ45
BNC
TEST
LOOP
OFF ON
DTE
MODE
Figure 3.1 DC3X00 Base Panel label
Figure 3.2 Bit-switch definitions
Parameter
Label
Unit
Options
E1 Line connector Select
Up Down RJ45 BNC
Framing
CRC4
On Off CRC4 No CRC4
By-pass T/S16
BYP16
On
Off
By-Pass T/S16
T/S 16 Carries Payload
Bandwidth
Bandwidth
Binary
Switch 2 Binary Switches 0-31
Start timeslot
Start T/S
Binary
Switch 1 Binary Switches 0-31
Timing
Clock select
Position
Internal, Terminal, Loop, DTE Mode
Test
Test Loop
On Off
Run Test Loop No test
