siti 1a 1b 2a 2b 4 5 3 6 wire number terminal number 1. check of the ntba connection first the isdn connection at the ntba is checked at normal and at emergency operation. means that the ntba is connected to the 230 v mains. means that the ntba is connected to the 230 v mains and the installation is supplied by the telecom power supply. when the is plugged into the jacks of the ntba, the four leds light green when the ntba is working in normal operation, if it is running in the emergency mode all leds light red, provided that the ntba and the attachment are working correctly. normal mode emergency mode not siti 2. check of the wall outlet installation the ntba has to run in normal operation and the terminating resistors should not be mounted when the wall outlet installation is tested. the is plugged in one jack after another (see error chart on the back). siti 4. test completion after completing all tests the terminating resistors are mounted and the isdn installation can be put into operation. 3. enhanced check for s -bus installation 0 if more than one isdn device is to run at one isdn installation it is important that wires 2a and 2b are not reversed when terminated. in order to exclude reversal of these two wires, wire 2a is interrupted at the first possibility of the isdn installation. now the should show at each wall outlet the interruption of wire 2a. if it is showing interruption of wire 2b this proves that wire 2a and 2b have been reversed. when all reversals have been detected and corrected, wire 2a can be reterminated. siti the is a simple device for testing the installation of an isdn-s -connection. checking of the installation is done by plugging the into the rj45 jack. the terminating resistors should not yet be mounted. the four leds of the show the wiring diagram of the four terminating wires for the isdn-installation. siti siti siti 0 user manual siti btr telecom test device for isdn installations siti quick and easy testing with four leds p/n 130 659-e error detection siti all leds light green all leds are off all leds light red all wires are connected correctly all wires have been misconnected short circuit on the wire pairs or interruption on at least two wires of a pair one or several leds are off one or several leds light red misconnection of such wire of which the related led lights red interruption of such wire of which the related led is off when testing the wall outlets the leds on the will light as follows: siti by combining those four leds with their different conditions green, red and off, the can show more than 40 different wiring conditions. the following chart shows some examples. siti led auf dem siti wire 1a is interrupted error 1a (4) off off green green green green green green green red red off green red green red red red red red red green green green 1b (5) 2a (3) 2b (6) wire 2a is interrupted wire 1a has been reversed with wire 2b wire1b has been reversed with wire 2b wire 1b interrupted, wire 2a connected to terminal 5 instead of terminal 3 all wires are misconnected or the ntba is running in emergency mode note: the is not meant for steady operation. use it only for testing. siti designed and manufactured by: 1298/100/01/mams/899805-01 subject to technical change. btr blumberger telefon- und relaisbau albert metz e. k. im tal 2 d-78176 blumberg phone +49 7702/533-0 fax +49 7702/533-433 btr.telecom@ria-btr.de www.ria-btr.de
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