This is a measuring instrument that can visualize the noise level in metal lines when replacing core wires as a tool to prevent noise-induced failures.
When a metal line failure is repaired, extremely low level noise can be measured, even though it cannot be identified through line testing using a circuit inspection tester and line test handset.
The measured noise level is displayed on an LED display, thus allowing an easy pass/fail decision.
A monitor speaker with automatic level control is incorporated, allowing checks of core wire identification signals and noise in an audible band at -70 dBm or higher.
The compact size LCK-601 allows users to hang it around their neck.
Dry batteries can support extended use.
The minimum measurement level is -70 dBm.
Configuration example
Main Specifications
| Item | Specifications | Remarks |
|---|---|---|
|
Input impedance
|
Within 600Ω±5% (balanced) (Input terminal: crocodile clip) |
|
|
Absolute maximum input level
|
5dBm |
|
|
Level measurement range
|
-70dBm ～ -30dBm AND -30dBm OVER、-70dBm UNDER |
|
|
Measurement accuracy
|
Within ±2 dB |
|
|
Measured value display
|
LEDs are used to display the following range |
|
|
Speaker
|
Sounds when the power switch is set to the speaker ON position |
|
|
Power supply
|
AA batteries × 2 |
|
|
Guaranteed temperature/humidity performance
|
Temperature: 0°C to 40°C; Humidity: 20% to 85% (Note: in an environment with no condensation) |
|
|
Dimensions/mass
|
Dimensions: H115 × W69 × D28 mm (The projection is not included) |
