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Description: The MP1777A is a measurement solution for jitter evaluation. It supports both the STM-16/32/64 and OC-48/96/192 bit rates. In addition to supporting the bit rates of 2488.32, 4976.64, and 9953.28 MHz two additional bit rates used in submarine cable systems can be added as options. The MP1777A can evaluate jitter characteristics, including jitter tolerance, jitter transfer, and output jitter, which are parameters most commonly used to evaluate digital lines. In combination with the MP9677B O/E and E/O converter, the MP1777A can measure the jitter tolerance of optical interfaces.
It has the following specifications:
Bit rates: 2488.32 Mbit/s (STM-16/OC-48), 4976.64 Mbit/s (STM-32/OC-96), 9953.28 Mbit/s (STM-64/OC-192)
Jitter generation
Modulation frequency: 10Hz to 20MHz (2.5G); 10Hz to 40MHz (5G); 10Hz to 80MHz (10G)
Maximum jitter amplitude: 800 UIpp (2.5G); 1,600 UIpp (5G); 3,200 UIpp (10G)
Jitter measurement
Jitter bandwidth: 20 MHz (2.5G); 40 MHz (5G); 80 MHz (10G)
Measurement range: Uipp, UI+p, UI-p, UIrms
Measurement filter: (Built-in filter) LP, HP1+LP, HP1'+LP, HP2+LP, HP+LP, HP'+LP
Frequency Adjustment
Range: +/- 50ppm/step 0.1 ppm
Accuracy: +/- 0.1ppm (at 23 +/- 5oC after calibration 60 minutes or more after power-on)
The MP9677B is the only combined E/O and O/E converter in the world that has an 80 MHz clock recovery bandwidth required for accurate jitter measurement at 10 Gb/s, as specified in the ITU-T O.172 standard. Three separate Clock Recovery Units are now available to support the standard 9.953 Gb/s, commonly used 10.664 Gb/s FEC and the latest OTN 10.709 Gb/s rates. All of these CRUs are interchangeable and field installable which makes the MP9677B a cost-efficient converter when you need any or all for your application. A bandwidth selector is available on the CRUs which are used to switch the recovered clock to change to either in "Wide" or "Narrow" bandwidth mode depending on the type of measurement you need to perform: (1) Jitter or (2) BER measurement.
This unit has the following specifications:
Bit rate 2.4 to 11 Gbit/s (typical)
Optical Signal Output
Level: –5 dBm +/- 3 dBm (average power)
Output waveform: NRZ
Wavelength: 1545 nm +/- 20 nm (any one wavelength within range)
Wavelength width: 1 nm (20 dB down point)
Side mode suppression ratio: 30 dB
Extinction ratio: 10 dB
Connector: FC-SPC (single mode fiber)
Electrical Signal Output
Data level: 0 V +/- 0.3 V(VH)/–1 V +/- 0.3 V(VL), 50 Ohm
Output waveform: NRZ
Clock level: 1 V(p-p) +/- 0.3 V, 50 Ohm
Connector: SMA
Phase adjustable range: => 100 ps
Optical Signal Input
Sensitivity: Wide: –11 to –5 dBm, Narrow: –11 to –3 dBm
Input waveform: NRZ
Wavelength: 1480 to 1580 nm
Maximum input level: 0 dBm (average power)
Return loss: 20 dB
Connector: FC-SPC (single mode fiber)
Electrical Signal Output
Data level: 0 V +/- 0.2 V(VH)/ –1 V +/- 0.2 V(VL), 50 Ohm
Output waveform: NRZ
Clock level: 1 V(p-p) +/- 0.33 V, 50 Ohm
Connector: SMA
Phase adjustable range: => 100 ps
Through Data Input: 0 V +/- 0.3 V(VH)/–1 V +/- 0.3 V(VL), 50 Ohm
Retiming clock input: 1 V(p-p) +/- 0.3 V, 50 Ohm
Internal phase adjustable range: => 100 ps
Reshaped data output: 0 V +/- 0.2 V (VH)/–1.5 V +/- 0.2 V(VL), 50 Ohm
Connector: SMA
This system has the following module installed:
MU967701A = Clock Recovery Unit (9.95328 Gbit/s)
It has the following specifications:
Data Input
Reshaped Data Input
Bit Rate: 9.95328 Gbit/s +/- ppm
Level: 0.5 to 1.5 V(p-p), 50 Ohm
Input waveform: NRZ
Connector: SMA
Data Output
Through data output
Bit rate: 9.95328 Gbit/s ±50 ppm (MU967701A, depend on input signal)
Level: 0 V +/- 0.2 V(VH)/–1 V +/- 0.2 V(VL), 50 Ohm
Output waveform: NRZ
Connector: SMA
Clock Output
Retiming clock output, monitor clock output
Frequency: 9.95328 GHz +/- 50 ppm (MU967701A, depend on input signal)
Level: 1 V(p-p) +/- 0.2 V, 50 Ohm
Connector: SMA
These systems have the following applications:
Research, development and manufacturing for optical modules and transmission equipment for STM-64/OC-192 and FEC
Continuity testing during line construction by STM-64/OC-192 and FEC line operators and constructors, and maintenance after operation starts
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