The Ermenrich NetGeeks NU25 optical multimeter is a multifunctional device that can be used to measure optical power, detect cable breaks and determine other characteristics of an optical network and its components.
The VFL (visual fault locator) function allows you to assess cable damage using light signals. There are three types of such signals: steady light, slow blinking and fast blinking. Other network test results are shown on a colour TFT screen with backlight, for example the connector crimp quality test and the frequency of the detected signal. The device's connector is protected from dust and water by a removable plastic cap.
The device can operate at one of six main wavelengths: 850, 980, 1310, 1490, 1550 or 1625 nm. The VFL function has a separate wavelength of 650 nm, as well as detectable frequencies of 270 Hz, 1 kHz and 2 kHz. The device is equipped with optical connectors to FC/SC/ST standards, as well as a network connector RJ45. The Ermenrich NetGeeks NU25 multimeter supports single-mode (SM) and multi-mode (MM) cables.
Main features:
- The device is powered by a built-in non-removable lithium rechargeable battery 3.7 V
- To save battery power, the auto power-off function is activated after 30 minutes of inactivity
- When fully charged, the battery lasts six hours
- Optical power level measurement in the range from −60 to +8 dBm
- Supports FC/SC/ST optical connectors and network connector RJ45
- Three additional service functions: frequency detector, cable head crystal quality control, VFL
The kit includes:
- Transmitter
- Remote module
- USB cable type C
- Bag
- User manual and warranty card
Characteristics
| Warranty |
5 years |
| Package size (L x W x H) |
21x12x5 cm |
| Shipping weight |
0.29 kg |
| Type |
optical multimeter |
| Wavelength of the optical power measuring device |
850/ 980/ 1310/ 1490/ 1550/ 1625 |
| Fibre connector type |
FC, SC, ST |
| Connector type |
RJ45 |
| Supported cable type |
single-mode (SM), multi-mode (MM) |
| Measurement units |
W, dB, dBm |
| Power logging range, dBm |
-60 — 8 |
| Reference level setting option |
yes |
| Visual fault locator (VFL) |
yes |
| Wavelength of the visual fault locator (VFL), nm |
650 |
| Connectivity test |
yes |
| Cable head crystal quality control |
yes |
| Input signal frequency detection |
yes |
| Detected input signal frequency, Hz |
270/1000/2000 |
| Display |
colour TFT |
| Display backlight |
yes |
| Power supply |
3.7 V 700 mAh, built-in battery |
| "Battery low" status indicator |
yes |
| Automatic power-off |
Yes, after 30 minutes of inactivity |
| Operating temperature range, °C |
-10 — 60 |
| Operating humidity range, % |
20 — 70 |
