Download test schedule

BHARAT SANCHAR NIGAM LTD.
TEST SCHEDULE
TRANSMISSION
SDH / STM-1/4/16/MADM O.F. System
T&D CIRCLE, JABALPUR
TEST SCHEDULE
STM-1/4/16/MADM OPTICAL FIBRE SYSTEM
Document No.
(TD/LG/2382/SDH/G/COLL.III)
No of Pages.
10
Issue No.
01
Issued By:
T&D Circle Jabalpur.
Approved by:
CGM T&D Circle Jabalpur.
Date of Issue:
23-12-2008
Amendment No. (If any)
No of Pages
Issue No.
Issued By:
T&D Circle Jabalpur.
Approved by:
CGM T&D Circle Jabalpur.
Date of Issue:
Restricted use by BSNL Employees only
“FIX IT RIGHT FOR THE FIRST TIME”
Page 1 of 10
O/o CGM T&D CIRCLE JABALPUR
Issue 5, Dt. 23-12-2008
BHARAT SANCHAR NIGAM LTD.
TEST SCHEDULE
TRANSMISSION
SDH / STM-1/4/16/MADM O.F. System
BHARAT SANCHAR NIGAM LIMTED
OFFICE OF THE CHIEF GENERAL MANAGER
TECHNICAL AND DEVELOPMENT CIRCLE
JABALPUR
TEST SCHEDULE FOR SDH/STM-1/4/16/MADM OFC SYSYTEM
PART-A
INFRASTRUCTURE TEST
S. No.
1. .
TEST
DESCRIPTION
Location Alignment
and Rigidity (LAR)
2.
Raised floor and
False Ceiling or
Antistatic flooring
(As provided)
3.
Illumination and
Power outlets
Check of Earthing
system
4.
5.
9.
Check of
Environmental
condition
QA certification of
all equipment
Check of
Documentation
Hardware
Conformity /
Software/
Conformity
*Power plant
10.
*Battery
6.
7..
8.
OBSERVATION
TEST
PROCEDURE/REFERENCE
As per approved Layout plan
REMARKS
Earth resistance value should be
< 0.50 ohm.
As per E.I.
No. I-001
Protection
Earthing.
i) Temperature between 22 to 25
degree C. ii) Relative Humidity
RH : 40% to 60%
For imported items refer to QA
Test results from vendor
As per P.O.
As per P.O.
To be checked for licensing
As per T&D
Test
Schedule in
case of new
Power Plant
As per T&D
Test
Schedule in
case of new
Battery.
Page 2 of 10
O/o CGM T&D CIRCLE JABALPUR
Issue 5, Dt. 23-12-2008
BHARAT SANCHAR NIGAM LTD.
TEST SCHEDULE
S. No.
11.
TEST DESCRIPTION
*Engine Alternator
12.
13.
Check of Fire fighting
Equipt / Fire Detection
system
Voltage drop
14.
Sign. Writing
TRANSMISSION
SDH / STM-1/4/16/MADM O.F. System
OBSERVATION
TEST PROCEDURE/REFERENCE
REMARKS
As per T&D
Test
Schedule
As per T&D
Test
Schedule
<1 Volt (Voltage drop from Battery
terminal to Equipt input )
Note: * If existing, then earlier A/T clearance to be shown and adequacy as per present load
requirement to be ascertained.
Page 3 of 10
O/o CGM T&D CIRCLE JABALPUR
Issue 5, Dt. 23-12-2008
BHARAT SANCHAR NIGAM LTD.
TEST SCHEDULE
TRANSMISSION
SDH / STM-1/4/16/MADM O.F. System
PART – B
LOCAL TEST
Name of Route :
Station :
Bay Code and Serial No.
Make :
Capacity :
S. No.
1.
Parameter
Check of Power Supply and its
distribution
1.1
D.C. Mains distribution to equipment
1.2
Check Of Derived Voltage
2.
2.1
SDH Test On Optical Interface
Optical Mean Launched Power
Measurement
Date of Testing:
Operating Wave Length: 1310 nm / 1550 nm
Fibre Number Used :
Measurement
Limit
- 40 to – 60 Volts (-51
Volts Nominal)
For L1.1 (0 to –5 dBm)
For L4.2 (+2 to –3 dBm)
For L16.2 (+3 to –2 dBm)
2.1.1
Laser Bias Current
2.2
Check of Receiver Sensitivity / Dynamic
Range
Receiver Sensitivity
(To be checked for all optical ports )
2.2.1
2.2.2
Minimum Overload Power
Measurement
2.2.3
Dynamic Range
Less than 80 mA.
For L1.1 (-34 dBm or
better)
For L4.2 (-28 dBm or
better)
For L16.2 (-27 dBm or
better)
For L 1.1 –10 dBm
For L 4.2 –8 dBm
For L 16.2 –9 dBm
For L1.1 (24 dB or better)
For L4.2 (20 dB or better)
For L16.2 (18 dB or
better)
2.3
2.3.1
2.3.2
3.
3.1
Check of Laser Safety
Manual Re-start
Automatic Laser Shutdown
Measurement of Bit Rate on Electrical Interface
Bit Error Rate Tolerance
 ppm
2 Mb/s
50
34 Mb/s
20
140 Mb/s
15
155 Mb/s
20
622.08 Mb/s
20
No Error
No Error
No Error
No Error
No Error
Page 4 of 10
O/o CGM T&D CIRCLE JABALPUR
Issue 5, Dt. 23-12-2008
BHARAT SANCHAR NIGAM LTD.
TEST SCHEDULE
S. No.
Parameter
3.2
Combined Jitter From Tributary
Mapping
Bit Rate 2 Mb/s
3.2.1
4.
4.1
4.2
4.3
4.4
4.5
4.6 *
4.7
5
Test for Ethernet Interfaces
Types of Ethernet Ports : 10BaseT,
10/100 BaseT, 100 Base Fx, 1000Base
T, 1000 Base Fx
In case of 100Base Fx, 1000 Base Fx
a. Laser Window : 1310 nm / 1550
nm
b. Trans. Power
c. Auto Laser Shutoff : Ok / Not Ok
No. of Ethernet ports available
Check for network accessibility
Cross connection details w. r. t.
Ethernet ports
Check for proper configuration details
w. r. t. Ethernet ports a. Ethernet class of interface :
Ethernet Port
b. Protocol used : Generic Framing
Procedure (GFP)
c. Ethernet Flow Control : Enable
d. Link Capacity Adjustment
Scheme (LCAS) : Enable
TRANSMISSION
SDH / STM-1/4/16/MADM O.F. System
Measurement
Limit
HP1+ LP
F1-F4 0.4 UI (HP1+LP)
F3-F4 0.075 UI (HP2+LP)
-8 to –15 dbm
a. Throughput test
b. Latency test
c. Packet (frames) Loss rate test
d. Back to Back frames test
Alarms w.r.t Ethernet ports a. Ethernet port Link down.
b. Loss of Capacity.
c. Partial Loss of Capacity
d. VCC Link down
e. Client Signal failure
f. Far End Client Signal failure
MADM Applications
A) Map one E1 with each
aggregate line card and
measure BER
B) Map one STM-1 tributary with
each aggregate line card and
measure BER
C) Create cross connection among
all four aggregate ports(two at a
time) on STM-1 & E1 level and
measure BER
No error
No error
No error
Page 5 of 10
O/o CGM T&D CIRCLE JABALPUR
Issue 5, Dt. 23-12-2008
BHARAT SANCHAR NIGAM LTD.
TEST SCHEDULE
TRANSMISSION
SDH / STM-1/4/16/MADM O.F. System
* Note :- For Test No.4.6 Ethernet Tester is required
PART – C
THROUGH TEST
Station:
S.
No.
1.
Parameter
2.
BER Measurement Tolerance
Bit Rate
(ppm)
2 Mb/s
50
34 Mb/s
20
140 Mb/s
15
155 Mb/s
20
3.
4.
Optical Receive Power Measurement
a) With Power Meter
b) With LCT
622.08 Mb/s
20
AIS Clock Frequency: Measurement
Output jitter Measurement
Bit Rate
2 Mb/s
34 Mb/s
140 Mb/s
155 Mb/s
622.08 Mb/s
5.
Input jitter Tolerance Measurement
2 Mb/s
34 Mb/s
140 Mb/s
155 Mb/s
622.08 Mb/s
Date. of Testing
Measurement Limit
For L1.1 (-28 dBm or
better)
For L4.2 (-22 dBm or
better)
For L16.2 (-21 dBm or
better)
Error Value
No Error
No Error
No Error
No Error
No Error
2048 KHz  102 Hz
F1-F4 0.75 UIPP F3-F4
0.2 UIPP
F1-F4 0.75 UIPP F3-F4
0.15 UIPP
F1-F4 0.75 UIPP F3-F4
0.075 UIPP
F1-F4 0.75 UIPP F3-F4
0.075 UIPP
F1-F4 0.75 UIPP F3-F4
0.075 UIPP
F1-F4 1.5 UIPP F3-F4 0.2
UIPP
F1-F4 1.5 UIPP F3-F4
0.15 UIPP
F1-F4 1.5 UIPP F3-F4
0.075 UIPP
F1-F4 1.5 UIPP F3-F4
0.075 UIPP
F1-F4 1.5 UIPP F3-F4
0.075 UIPP
Page 6 of 10
O/o CGM T&D CIRCLE JABALPUR
Issue 5, Dt. 23-12-2008
BHARAT SANCHAR NIGAM LTD.
TEST SCHEDULE
S.
No.
6.
Parameter
7.
7.1
Check of Order Wire:
Selective Calling (List of Order wires
no. to be attached)
Omnibus Calling
Check of Synchronization: with PRC
Source #
External Clock Measurement
Tributary Clock Measurement
Holdover Mode
Check of Protection Switching
Path Protection Switching
7.2
8.
8.1
8.2
8.3
9.
9.1
9.2
9.3
10.
10.1
10.2
10.3
11.
11.1
11.2
11.3
12.
12.1
TRANSMISSION
SDH / STM-1/4/16/MADM O.F. System
Measurement Limit
Test for Ethernet Interface. **
a. Through put test
b. Latency test
c. Packet (frames) Loss rate test
d. Back to Back frames test
2048 KHz  4.6 ppm
2048 Kb/s  50 ppm
Check that after
protection Switching. AIS
is restored
Equipt. Protection Switching
Order wire Function (After Switch over)
Network Management System (NMS)
(Applicable only for NMS stations)
Performance Monitoring
Configuration Management
Security Management
Craft Terminal ( For Local & Remote )
Performance Monitoring
Configuration Management
Security Management
Alarms
Alarms Name
a. FERF
b. AIS
c. LOP
d. MS
e. LOS
f. LOF
13.
Error Performance (Stability Test) (48
hrs. continuously)
13.1
Bit Rate
2 Mb/s
Limit at 64 Kb/s
DM : 0.023 %
ES : 0.018 %
SES : 0.00023 %
Note: Limits are given for length of 280 kms. of fibre.
**
For Test item 6. Ethernet Tester is required.
#
Tracing of the Sync path to be indicated.
Page 7 of 10
O/o CGM T&D CIRCLE JABALPUR
Issue 5, Dt. 23-12-2008
BHARAT SANCHAR NIGAM LTD.
TEST SCHEDULE
TRANSMISSION
SDH / STM-1/4/16/MADM O.F. System
ANNEXURE
BHARAT SANCHAR NIGAM LIMITED
OFFICE OF THE CHIEF GENERAL MANAGER T&D CIRCLE JABALPUR
Procedure for SDH OFC system for SDH/STM-1/4/16
LOCAL TEST
(1) SDH.TEST ON OPTICAL INTERFACE.
2.1 Check of optical mean launched power
THE TEST SET UP IS SHOWN BELOW:----Optical Power Meter
SUT (System
Under
Test)
Fig. 1
1.1
OPTICAL POWER MEASUREMENT ON PC/LCT :--
(a) OPTICAL POWER
(b) LASER BIAS CURRENT
NOTE: POWER SHOULD BE MEASURED WITH ALS( AUTOMATIC LASER SHUT
DOWN
INHABITED WITH THE HELP OF PC ) i.e. OPTICAL POWER IS IN FORCED ON
CONDITION.
2.0 CHECK OF RECEIVER SENSITIVITY/DYNAMIC RANGE :The test set up is given in fig. 2 below:DTA TX
SYSTEM UNDER
TEST
OPTICAL
POWER
METER
OPTICAL
ATTENUATOR
DTA RX
FIG. 2
Page 8 of 10
O/o CGM T&D CIRCLE JABALPUR
Issue 5, Dt. 23-12-2008
BHARAT SANCHAR NIGAM LTD.
TEST SCHEDULE
TRANSMISSION
SDH / STM-1/4/16/MADM O.F. System
3. CHECK OF LASER SAFETY :LIMIT :TX POWER SHOULD COME DOWN TO 10
db with respect to measured trans power (it should be below –10 dBm)
The above test may be conducted with the help of software if available with
the system under test.
4.0 MESUREMENT OF BER ON ELECTRICAL INTERFACE:
Measure the BER at electrical interface as per procedure given in the
diagram 3 given below:SYSTEM UNDER
TEST
E/I
O/E
SDH ANALYSER
/DTA TX/RX
OPTICAL ATTENUATOR
FIG. 3
5.0 COMBINED JITTER FROM TRIBUTARY MAPPING :- Make the test set up as
given in fig.4 below.
Now vary the bit rate tolerance of 2 Mb/s pay load as applicable (i.e. 50
ppm) & measure the output jitter. Measure the output jitter & check for it
being in the limit.
REFERENCE CLOCK
DTA
SYSTEM UNDER
TEST
TX
OPTICAL
ATTENUATOR
RX
FIG 4
DTA IS WORKINGON INTERNAL CLOCK
Page 9 of 10
O/o CGM T&D CIRCLE JABALPUR
Issue 5, Dt. 23-12-2008
BHARAT SANCHAR NIGAM LTD.
TEST SCHEDULE
TRANSMISSION
SDH / STM-1/4/16/MADM O.F. System
THROUGH TEST
1.0 Optical receive power: Optical receive power should be measured
with the help of power meter and craft terminal and observations are
to be recorded.
2.0 BER Measurement
3.0 AIS CLOCK FREQUENCY MEASUREMENT:Measure the AIS frequency on any two 2 Mb/S tributaries.
2.0 Output Jitter Measurement (with mapping): Feed the 2/34/140 Mb/s
PRBS signal
3.0 (without jitter) from DTA transmitter to the tributary input of the SDH
4.0 equipment under test. Now measure the output jitter for the tributary
mapped
5.0 by SDH system with the help of DTA Rx as shown in fig.5 by selecting
suitable
6.0 filters. The output jitter should be within the limits given below. Repeat
the
7.0 test for other tributaries also.
2/34/140
2/34/140 Mb/S
DTA TX
Mb/S
DTA RX
SDH
SYSTEM
UNDER
TEST
B
B
SDH
SYSTEM
UNDER
TEST
A
A
STATION A
STATION B
FIG 5
5.0
6.0
7.0
8.0
9.0
10.0
INPUT JITTER TOLERANCE (With mapping): Feed 2/34/140 Mb/s signal
modulated
by sinusoidal jitter frequency from DTA transmitter to the tributary input
of SDH equipment. Set the jitter frequency as per table below &
increase
the jitter level till error appears in DTA receiver. Note down the
maximum
jitter amplitude corresponding to no error, condition. Repeat the
above
procedure with clock offset also as applicable for bit rates.
Page 10 of 10
O/o CGM T&D CIRCLE JABALPUR
Issue 5, Dt. 23-12-2008
BHARAT SANCHAR NIGAM LTD.
TEST SCHEDULE
TRANSMISSION
SDH / STM-1/4/16/MADM O.F. System
6.0 Check of O/W :
(i) O/W may be tested up to BER 1x10-3 for speech and signalling by
attenuating the power by inserting optical pads.O/W should be able to work
when BER is upto 1x10-3
7.0 Check of Synchonisation :
Check that master station/node is synchronised with Cesium or Rubidium
clock or from the clock of nearby TAX. Other nodes may be synchronised
with the clock extracted from incoming tributaries.
8.0 Check Of Protection switching :Put the system on PPS and record the
time of AIS Restored.
9.0. ALARMS: As per manufacture’s guidelines.
10.0 ERROR PERFORMANCE (STABILITY TEST):
System should meet the following limits at Bit rate of 64Kb/s for test duration of
Available time of 48 hours continuously.
These limits are given for HRDS length of 280 KM. If a real digital section under
test is longer than HRDS length of 280 Km ,its overall allocation should
correspond to that of integer number of HRDS,the combined length of which
are atleast as long as the real digital section length. If a real section is shorter
than 280 Km ,there will be no reduction of bit error allocation.
__________________________________________________________________________
Page 11 of 10
O/o CGM T&D CIRCLE JABALPUR
Issue 5, Dt. 23-12-2008