The SDH-1620A is an advanced and handheld SDH/PDH transmission analyzer, which integrates on-line and off-line test of STM-1(155M) and E1 (2M) and tests of STM-4（622M）, STM-16(2.5G) into one package. Being highly affordable, easy-to-use and scalable, this powerful unit is ideal for installation and maintenance testing over the SDH/PDH transmission and access networks.
l BERT: BERT test for PDH and SDH and error performance analysis per G821、G826、G828、G829、M2100 and（or）M2101; directly and automatically compare the test results with standards.
l Anomaly/defect testing: Tx-end transmitting anomaly/defect events and Rx-end receiving anomaly/defect events with record and statistics; recorded events displayed in chart and/or graphics and supporting filter selection
l Overhead testing: overhead emulating transmission and receiving analysis; two parts: general part (including J0/J1/J2/S1/V5/C2) and extended part (all the remaining overhead bytes except A1/A2、B1/B2/B3 )
l Pointer monitoring: generate G.783 pointer and NDF pointer; display pointer value in real-time; record pointer adjustment events (positive, negative and NDF)
l APS timing measurement: measure the network switchover time
l Round trip delay testing: measure the signal transport time from Tx to Rx
l Tributary scan: auto scan each tributary with the range optional
l Timing and synchronization testing：frequency accuracy test; pull-in range and pull-out range test
l Real-time optical power testing
l Voice monitoring: able to select any channel of SDH/PDH
l Easy operation: 10.4’’TFT touch screen, visible graphic display
l Simulated indicators: for current and history alarm and error status; indicator quantities and types can be automatically set based on tested signals and interface settings.
l Multi-task testing: multiple tasks can be created and deleted dynamically and freely.
l Clock interfaces: external clock Tx & Rx interfaces
l Events record: large capacity for recording bit error and alarm events; events displayed in chart and graphics and supporting filter selection
l Data management: test results may be saved as HTML or TXT format or exported to U-disk or PC for viewing and printing
l Offline Service Test：Remote Loopback Test；
l Offline Service Test ：End-to-end Test
l Online Test：Through Splitter and High-impedance Jumper Test
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General
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Spec
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290×210×60 (mm)
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Weight
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2.2KG
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Screen
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TFT,10.4”LCD,640×480 pixel color
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Operation Mode
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Touch
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Interfaces
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USB, 10M network interface and power interface
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Battery
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Rechargeable Li-ion battery
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Endurance Time
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>3 hours
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Work Environment
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Operation Temperature
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-10℃~+45℃
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Storage humidity
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-20℃~+70℃
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Operation humidity
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10% ~ 90%
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Storage humidity
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5% ~ 95%
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Data Storage
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512M
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Test Interfaces- Optical Transceiver Interfaces
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Nominal rate
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STM-1：155M
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STM-4：622M
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STM-16：2.5G
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Connector
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SFP
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Optical Tx wavelength
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1310nm &1550 nm
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Optical Tx power
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1310nm
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－8～－15dBm
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1550nm
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0～－5dBm
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Rx sensitivity
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－35dBm
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Optical over-load level
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－2dBm
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Optical over-load level
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1100nm～1580nm
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Test Interfaces - STM-1 Electrical Interface
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nominal rate
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155.520 Mbit/s
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Code
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CMI
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Impedance
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75Ω
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Connector
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siemens L9，unbalanced
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Standard
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Accord with ITU-T G.703
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Test Interfaces – PDH Interface
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Support Rate
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2048 kbit/s
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Code
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HDB3
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Impedance
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Output
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75Ω
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Input
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75Ω or high impedance（>1kΩ）
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Connector
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siemens L9，unbalanced
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Standard
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Accord with ITU-T G.703
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lBasic
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Part No.
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Description
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Remarks
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SDH-1620A SDH/PDH transmission test unit
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E1（2048kbit/s）electrical
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2048KHz external clock
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STM-1（155M）electrical
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STM-1（155M）optical
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requires separated SFP
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lSTM-N Test Module Options:
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Type
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Description
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Remarks
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STM-N
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STM-4(622M)
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requires separated SFP
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STM-16(2.5G)
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requires separated SFP
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lSFP Transceiver Options
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Type
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Description
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Remarks
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SFP Transceivers
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155M SFP（S-1.1）
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enable STM-1(155M）optical interface on chassis, one option at least
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155M SFP（S-1.2）
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622M SFP（S-4.1）
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enable STM-4(622M）test module on chassis, one option at least
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622M SFP（L-4.1）
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622M SFP（L-4.2）
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2.5G SFP（I-16）
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enable STM-16(2.5G）test module on chassis, one option at least
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2.5G SFP（S-16.1）
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2.5G SFP（S-16.2）
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2.5G SFP（L-16.1）
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2.5G SFP（L-16.2）
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