Beschreibung
Remote switching of the line under test (L1, L2, L3, N) is performed using the RLI-100 Remote LISN Interface, which controls the LISN via fiber optic connection. In addition to the remote method, the line under test can also be selected using the mechanical, four-position switch located on the front panel of the LISNs. Using either switching method, the lines which are not selected are internally terminated into 50 ohms, while the selected line is terminated by the 50 ohm input impedance of the measuring instrument.
5.0 LISN Operation. Operation of each of the LI-3P-1x Series LISN models includes local (front panel) and remote switching of the line under test. For the LI-3P-163 and LI-3P-1100 models, operation also includes operation of the two internal cooling fans.
5.1 Local (Front Panel) Operation. When operated locally (from the front panel), the test lead selection switch on the LISN front panel is used to switch between L1, L2, L3 and N as the lead under test. The switch also acts as the indicator of the line selected, as the LED line under test indicators will remain dark when the LISN is operated locally.
NOTE: Operation of the LISN from the front panel is possible when the REMOTE ACCESS LED is NOT lit, meaning there is no remote connection to the RLI-100 Remote LISN Interface. When operating from the front panel, there is no need for the DC power input to the front panel or the fiber optic cable.
5.2 Remote Operation In order to enable remote operation, the 6 VDC AC power adapters must be plugged in and connected to the appropriate input power ports on the left side of the RLI-100 Remote LISN Interface and on the front panel of the LISN. Then, connect one end of the fiber optic cable to the fiber optic port on the RLI-100, and connect the other end into the fiber optic port on the front panel of the LISN. Once the fiber optic cable is connected, and both sides are powered, the link is established automatically. When linked, the REMOTE ACCESS and L1 LEDs on the LISN front panel should become lit, as well as the L1 LED on the RLI-100. Once linked, you are now able to switch the test leads using the L1, L2, L3 and N buttons on the top surface of the RLI-100. The active (lit) line under test indicator LEDs on both the RLI-100 and the LISN front panel should immediately change with respect to which button is pressed..
