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Ermenrich NetGeeks NU20 Optical Multimeter
EN
Please carefully read the safety instructions and the user manual before using this product. Keep away from children. Use the device
only as specified in the user manual.
The kit includes: transmitter, remote unit, Type-C USB cable, user manual, and warranty.
Charging the device
This device uses a rechargeable Li-ion battery. Connect the power cable to the device and the 5V, 1A DC adapter for charging (not included)
via a USB plug and connect it to the AC power supply to charge the battery.
Getting started
Press and hold the AUTO button (3) for 3 seconds to turn the device on/off.
Press the AUTO button (3) to enable/disable the auto-off option option, and then observe the corresponding icon on the screen. When the
auto-off option is enabled, the device will automatically turn off in 30 minutes.
Press the flashlight button (1) to turn the flashlight on/off.
Optical power meter
This function is intended to test optical power. The optical power meter function is turned on by default.
1.
Connect one end of the fiber cable end to the fiber optic connector (1) of the optical multimeter; connect the other fiber cable end to the
corresponding connector of the external optical light source (external device).
2.
Turn on the external optical light source (external device).
3.
Press the WAVE button (4) to select a wavelength value (850nm, 980nm, 1310nm, 1490nm, 1550nm, or 1625nm). The wavelength value
of the optical multimeter and the wavelength value of the light source must be the same.
4.
Press the UNIT button (5) to select the units of measurement.
5.
Press the REF button (2) to display the last saved reference value (the default value is 0dB).
6.
Press the REF button (2) to measure the optical power. The result will be displayed on the screen.
7.
Press and hold the REF button (2) to save the value as a reference value.
Cable continuity test
To switch the cable continuity test function on, press the CONT button (6). Use this button to select the fast mode (0.5s) or slow mode (1s).
To test a network cable, plug one end of the cable into the RJ45 port (4) on the transmitter and the other end into the RJ45 port (6) on the
remote unit.
The results are shown with the corresponding LEDs (5). Possible outcomes are shown below:
Normal: The LEDs on the transmitter and on the remote unit will
blink green one by one.
Transmitter: 1-2-3-4-5-6-7-8
Remote unit:
1-2-3-4-5-6-7-8
Open: If pin 2 is open, the corresponding LEDs on the transmitter
and on the remote unit will not glow.
Transmitter: 1-x-3-4-5-6-7-8
Remote unit:
1-x-3-4-5-6-7-8
Specifications
Optical power meter wavelength
Power detection range
Fiber connector type
Maintained cable type
Units of measurement
Cable continuity test
Operating temperature range
Power supply
The manufacturer reserves the right to make changes to the product range and specifications without prior notice.
Short: If pins 2 and 5 are short-circuited, the corresponding LEDs
on the transmitter and LEDs on the remote unit will show a weak
glow.
Transmitter: 1-2-3-4-5-6-7-8
Remote unit:
1-2-3-4-5-6-7-8
Transmitter: 1-2-3-4-5-6-7-8
Remote unit:
1-2-3-4-5-6-7-8
Cross: If pins 2 and 5 are cross-connected, the corresponding
LEDs on the remote unit will blink in the same manner.
Transmitter: 1-2-3-4-5-6-7-8
Remote unit:
1-5-3-4-2-6-7-8
850/980/1310/1490/1550/1625nm
–60... +8dBm
FC/ST/SC
single-mode (SM), multimode (MM)
dB/dBm/W
+
–10... +60°C / +14... +140°F
3.7V, 700mA·h rechargeable lithium battery
4
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