VIAVI 4100 Series E41CWDM8U CWDM OTDR Module, 8 Wavelengths 1471 to 1611 nm
CWDM OTDR module for T-BERD/MTS platforms covering 8 CWDM wavelengths from 1471 nm to 1611 nm with in-service testing.
- CWDM wavelengths
- 8 wavelengths from 1471nm to 1611nm
- Wavelength range
- 1471 to 1611 nm
- Wavelength tolerance
- +/-3nm
- Pulsewidth
- 10 ns to 20 μs
Overview
The VIAVI E41CWDM8U is the CWDM8U version of the 4100 Series CWDM OTDR modules for the T-BERD/MTS test platforms. It covers 8 CWDM wavelengths from 1471 nm to 1611 nm, which lets cable operators, dark fiber providers and telecommunication service providers test through MUX/DEMUX and characterize or troubleshoot active C-RAN, DAS and mobile fronthaul CWDM networks end to end.
The module tests new CWDM wavelength routes and locates faults on in-service links without disrupting traffic on active channels. It detects traffic on the fiber automatically before testing. An integrated continuous wave light source works on the same wavelengths as the OTDR and has a modulation capability, so end-to-end continuity can be checked as well.
The module can be paired with the E41CWDM10L module (1271 to 1451 nm), which gives 18 CWDM wavelengths across two modules. It can also be used with the COSA-4055 CWDM spectrum analyzer module, which measures the wavelengths and power levels of active CWDM channels.
Software and analysis
The T-BERD/MTS platform offers automatic multitest configurations, a summary results table with pass/fail analysis and FastReport onboard report generation. The optional Smart Link Mapper (SLM) turns the OTDR trace into icons for splices, connectors and MUX/DEMUX elements, which makes the trace easier to interpret.
Key Features
- 8 CWDM wavelengths from 1471 nm to 1611 nm in one module
- 18 CWDM wavelengths covered with 2 modules
- Integrated CW light source with modulation capability on the OTDR wavelengths
- Instantaneous automatic traffic detection
- In-service testing through MUX/DEMUX
- Optimized performance for access and metro applications
- Optional Smart Link Mapper (SLM) converts the OTDR trace into icons for splice, connector and MUX/DEMUX
- Automatic multitest configurations
- Summary results table with pass/fail analysis
- FastReport onboard report generation
- Can be combined with the COSA-4055 CWDM spectrum analyzer module
- Compatible with T-BERD/MTS-2000, -4000, -4000 V2 and -5800 platforms
Specifications
| CWDM wavelengths | 8 wavelengths from 1471nm to 1611nm |
|---|---|
| Wavelength range |
1471 to 1611 nm
Ordering information
|
| Wavelength tolerance |
+/-3nm
Laser at 25°C and measured at 10 µs
|
| Pulsewidth | 10 ns to 20 μs |
| Dynamic range |
35dB
One-way difference between extrapolated backscattering level at fiber start and RMS noise level, after 3 minutes averaging, largest pulsewidth
|
| Event dead zone |
1.5 m
Measured at ±1.5 dB down from the peak of an unsaturated reflective event using the shortest pulsewidth
|
| Attenuation dead zone |
5 m
Measured at ±0.5 dB from the linear regression using a FC/PC reflectance and the shortest pulsewidth
|
| Automatic traffic detection | Yes |
| In-service testing | Yes |
| Wavelengths | same as OTDR |
|---|---|
| Output power |
-3.5 dBm
Subtract 3 dB when used in modulation mode (270/330/1/2 kHz)
|
| Operating modes | CW, 270 Hz, 330 Hz, 1 kHz, 2 kHz |
| Mode | Automatic or dual cursor |
|---|---|
| Display range | From 0.5 up to 260 km |
| Display resolution | 1 cm |
| Cursor resolution | From 1 cm |
| Sampling resolution | From 4 cm |
| Accuracy |
±1 m ±sampling resolution ±1.10-5 x distance
Excluding group index uncertainties
|
| Distance units | Km/m/mile/ft |
| Group index range | 1.30000 to 1.70000 in 0.00001 steps |
| Number of data points | Up to 256,000 data points |
| Mode | Automatic, manual, 2-point, 5-point and LSA |
|---|---|
| Display range | From 1.25 dB to 55 dB |
| Display resolution | 0.001 dB |
| Cursor resolution | From 0.001 dB |
| Attenuation linearity | ±0.03 dB/dB |
| Threshold | 0.01 to 1.99 dB in 0.01 dB step |
| Mode | Automatic or manual |
|---|---|
| Reflectance accuracy | ±2 dB |
| Display resolution | 0.01 dB |
| Threshold | –11 to –98 dB in 1 dB steps |
| Laser safety | Class 1 (IEC), Class 1 (21CFR) |
|---|---|
| Storage | Bellcore/Telcordia compatible Version 1.1 and Version 2.0 |
| Weight | 430g (0.95 lb) |
| Dimensions (w x h x d) | 128 x 134 x 40 mm (5 x 5.28 x 1.58 in) |
| Compatible platforms |
T-BERD/MTS-2000, −4000 V2, −5800
The web page also lists T-BERD/MTS-4000
|
Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.
Applications
- End-to-end CWDM link characterization during network deployment
- Qualification of fronthaul access networks
- C-RAN and DAS network testing
- Testing new CWDM wavelength routes without disrupting active channels
- In-service fault location on live networks
- End-to-end continuity verification with CW source
Options & Accessories
| Option | Description |
|---|---|
| EUSCADS | Screw type adapter for PC connectors (SC) |
| EUFCADS | Screw type adapter for PC/APC connectors (FC) — Listed by the datasheet for both PC and APC (8°) connectors |
| EULCADS | Screw type adapter for PC connectors (LC) |
| EUSCADS-APC | Screw type adapter for APC (8°) connectors (SC) |
| EULCADS-APC | Screw type adapter for APC (8°) connectors (LC) |
Documents & Resources
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