... , short circuit and open circuit.2. JV505B tests cables of BNC, RJH and RJ453. JV505C tests cable ... lights will not turn on respectively. If less than two cables are connected, none of the light is on.(3 ... -2-5-6-7-8-G(4) If two cables are short circuited, neither of the corresponding lights ... remote tester while main tester remains unchanged. If three cables, including three, are short circuit, none of ...