US5G`S Enhanced Clock By - Frequency Electronics Inc

Transcription

Frequency Electronics, Inc.
US5G
NEXT GENERATION INTELLIGENT BITS
FROM FEI
Ron Evans
Director Wireline Product Marketing
Tel: 818-706-1706
email: [email protected]
Olie Mancini
Vice President New Business Development
Tel: 516-357-2464
email: [email protected]
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US5G TSG/SSU
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US5G
9 Reasons Why It’s Better?
1.
2.
3.
4.
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6.
7.
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9.
Greater Main Shelf Port Density
Complete Software Control Of Input and Output
Signal Options
Improved Redundancy
More Automated Functions for Maintenance &
Administration
Embedded GPS Receivers In the IOP Modules
Improved Clock By-Pass Implementation
Open Software Architecture—Developed in CE.NET
More Oscillator Options
Simple Installation and Commissioning Procedure
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Software Optioning
Inputs and Outputs

10 External Inputs are software optioned for
frequency—DS-1, CC, 1, 5 10 MHZ, framing—
D-4/ESF, and SSM.

Output ports are individually provisioned for
DS-1 or Composite Clock

Inventory all input and output port
assignments in software
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Enhanced Software Control

Internal Software checks performed upon insertion of
a replacement module to verify:
–
–
–

Hardware/software compatibility with current OS Version
Automatic loading of the latest software version
Re-provision the replacement with prior user settings
Automated Software downloads for revision upgrades
Diverse redundant on-board storage of configuration
databases
Inventory CLEI and Mfg Serial Number in software to
aid in field servicing and PCN administration
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US5G Software Development
Factors

The Operating System is developed in “Nonproprietary,” open standards environment
– Microsoft CE.NET
– Intel Microprocessor

It is intrinsically network capable to allow for
future migration into a client server
architecture
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Software System Security
Provisions

It is Critical to establish a rigorously administered and
enforced security Policy.
A security Admin will be the only operator to be able
to enter or modify user status at the top level.
A Sys Admin will have access to all operations below
the Sec Admin
Technical users will be able to perform all operational
tasks.
Monitor users will be able to only view data.
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Performance Monitoring for
Sync Quality Assurance
Requires the collection and averaging of metrics
over both short and long time periods—typically:
1.
2.
3.
4.
100/300 Sec.
1000/3000 Sec.
10,000/30,000 Sec.
100,000 Sec.
Requires the ability to set thresholds and to execute
an appropriate user selectable response
1.
2.
3.
4.
Fail and switch
Report Alarm
Report Event
Ignore Event
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US5G
Performance Monitoring Metrics
Primary PM Metrics:
1. Frequency Offset—for frequency accuracy
2. MTIE—for frequency stability
3. TDEV—for wander measurement
Other Metrics include:
1. TIE
2. LMRTIE
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The US5G as Precision Sync Test Set

Provisioning Reference inputs normally utilizes only 2
or 3 input ports.

Others can be configured for Monitor Only and will
collect PM data as previously described.

Input leads can be permanently tied down and routed
to a mini DSX panel.

Any desired clock signal can be routed to the DSX for
patching into the monitor ports.
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System Management Software
LOCAL & REMOTE MANAGEMENT PROTOCOLS

Transactional Language 1 (TL1) manages the SSU

Simple Network Management Protocol (SNMP Ver. 3)
– Standardized Internet protocol—(Due in Q-2 2005)
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US5G Remote Manageability
Enables You to:

Fully provision inputs solely in software
Fully provision output ports in software including on/off, signal format—
DS-1 or CC, framing, SSM, line length compensation, and NE
assignment
Selectively re-configure shelf elements in order to isolate operational
problems
Remotely access PM data for troubleshooting sync problems
Remotely direct and monitor local technician repair or maintenance
activity
Transmit alarms and PM data to higher level management systems
automating trouble isolation and sync quality assurance
Remotely enter or access port assignments or equipment inventory data
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Software Management—Local and Remote
10 Base-T Ethernet Port
(10 Mbps LAN Access)
LYNX RSNM
ETHERNET
WAN
X25
Port
Two Remote Craft Ports
RS232C
PSTN Asynchronous
serial lines
Local Craft Port
RS232C
PSTN
Asynchronous serial line
Remote
Synchronization
Network
Management
System
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US5G ST-2 Oscillators
Rubidium Atomic Frequency Standard
e.g. FE-5680A
•Low profile less than 1 in (25 mm) in height
•Excellent frequency stability eliminates the
need for scheduled re-calibration
•Less than 7 microseconds of accumulated
time error in 24 hours holdover during wide
temperature ranges and slew rates
Output Frequency
Frequency Stability vs.
Temperature
Drift
Short Term Stability
Phase Noise
Frequency vs. Temp.
1 Hz to 20 MHz
(opt. ± 5x10-11)
± 3 x 10-10
(-10o C to + 60o C)
(opt. ± 2x10-12)
2 x 10-11/day
2 x 10-9/year
(opt. ± 2x10-10)
1.4 x 10-11 / τ1/2 (opt. 5 x 10-12/τ1/2)
-100dBc/Hz at 10 Hz offset
-145dBcHz at 1000 Hz offset
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Quartz Crystal Standard
“Poor Man’s Rubidium”
•Producible in Large Quantities
•Excellent Temperature Stability <1x10-10
NEW TECHNOLOGY
•Low Aging <5 x 10-11 / day; <5 x 10-8 /10
year
•Near Rubidium Accuracy at 1/3 the Cost
FE-205A
•Any frequency from 1 pps to 100 MHz
•Analog or Digital Frequency Control with
better than 1 % Linearity
•Units in Stock at 10 MHz and 15 MHz
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ST-3 Oscillators
OCXO
FE-189XO
Double Oven Cost-Effective
Quartz Oscillator
Output Frequency
Frequency Stability vs.
Temperature
Aging
4.096 MHz and 10 MHz
± 2 x 10-10
(-20o C to + 70o C)
± 1 x 10-10 / day
± 3 x 10-8 / year
Short Term Stability
5 x 10-12 for 0.1 sec
Low Phase Noise
-100dBc/Hz at 1 Hz offset
-150dBc/Hz at 1 kHz offset
Standard Case and Pin-Outs 38 x 50 x 50 mm
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US5G Protection Switching
Newer methodologies for Protection Switching enable
“hitless” redundancy

Input switching—utilizing PM data to ensure reference quality
Local Oscillator switching
–
Between A and B or into Holdover
Output port protection
–
Two “always on” signals from a pair of output modules provide
redundancy to each NE
–
Modules are physically adjacent to each other for immediate
visual confirmation of protection availability
–
Software provisioning of an output is automatically replicated on
the paired protection module to eliminate potential provisioning
errors
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Input Switching
Output Phase Variations Resulting from Switching
Input References Successively from 1 to 2 to 3 to 4
Resulting Phase Hit is < 0.5 nsec
1
2
3
4
In [1] input 1 is cut and synch is performed on input 2
In [2] input 2 is cut and synch is performed on input 3 etc.
(Measurements made with PJS-2000 Synch Network Quality Meter)
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Clock Switching
Output Phase Variation Resulting from a Clock
Switch
Resulting Phase Hit is < 4 nsec
1
Clock 1 is switched to clock 2
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Output Switching
Output Phase Variation Resulting Resulting from
Removal of an Output Card
Resulting Phase Hit is < 6 nsec
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US5G’S Enhanced Clock ByPass for Survivability

By-Pass Mode Is always present with LED’s to
indicate either fault condition or by-pass activation

By-Pass sub-assembly is modular and accessible
from the front for maintenance and “hot” replacement
if necessary

By-Pass Mode is always protected by having two
inputs terminated allowing a switch to the stand-by in
the event of LOS

By-Pass is not dependent on the presence of any
other common module
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US5G FRONT PANEL
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Summary
Re-Capping the US5G Features
¾
¾
¾
¾
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¾
¾
¾
Expanded input capacity—10 1+1 bridged inputs software
configurable to DS-1, CC, E-1, 1, 5, or 10 MHz
Optional Single or Dual embedded GPS reference receivers
Redundant Clocks—ST-2 Rubidium, ST-2 Quartz, ST-3E Quartz
40 Outputs per module—160 protected 1+1 from the main shelf
1440 protected 1+1 outputs provided by 4 expansion shelves
Infinite capacity expansion via Sub-tending clock deployment
Hitless Protection Switching with typical performance
<0.5 nsec on input reference switching
<4 nsec during clock switching
<6 nsec during removal of an output card
Enhanced Clock By-Pass capability
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Summary—cont.
Powerful and Robust software to maximize:
¾ Remote inventory management to facilitate PCN implementation
¾ Top to Bottom Provisioning
¾ Full Performance monitoring of all inputs with configurable
thresholds for reference selection and alarming
¾ Enhanced Client/Server Network integration
¾ Open and standards based Operating System software to ease
the implementation of feature enhancements
¾ Remote Sync Network Management
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