• Showing  1 to  10 of  111 

    Filters:

    Category

    • Other equipment for telecommunication systems
    Product Logo   

    I.S. EN 61643-351:2017

    COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 351: PERFORMANCE REQUIREMENTS AND TEST METHODS FOR TELECOMMUNICATIONS AND SIGNALLING NETWORK SURGE ISOLATION TRANSFORMERS (SIT)

    National Standards Authority of Ireland

    Product Logo   

    I.S. ETS 300 118:1991

    ATTACHMENTS TO THE PUBLIC SWITCHED TELEPHONE NETWORK (PSTN) CATEGORY 2 ATTACHMENT REQUIREMENTS FOR 1200 BITS PER SECOND HALF DUPLEX AND 1200/75 PER SECOND ASYMMETRICAL DUPLEX MODEMS STANDARDIZED FOR USE ON THE PSTN

    National Standards Authority of Ireland

    Product Logo   

    I.S. ETS 300 123:1991

    ATTACHMENT REQUIREMENTS FOR DATA TERMINAL EQUIPMENT (DTE) TO CONNECT TO PACKET SWITCHED PUBLIC DATA NETWORKS (PSPDN) USING CCITT RECOMMENDATIONS X.25 (1984) INTERFACE REQUIREMENTS APPLICABLE TO DTES SUBSCRIBING TO LINK ACCESS PROCEDURE BALANCED (LAPB) EXTENDED (MODULO 128) OPERATION

    National Standards Authority of Ireland

    Product Logo   

    I.S. EN 61643-311:2013

    COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 311: PERFORMANCE REQUIREMENTS AND TEST CIRCUITS FOR GAS DISCHARGE TUBES (GDT) (IEC 61643-311:2013 (EQV))

    National Standards Authority of Ireland

    Product Logo   

    I.S. EN 61643-312:2013

    COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 312: SELECTION AND APPLICATION PRINCIPLES FOR GAS DISCHARGE TUBES (IEC 61643-312:2013 (EQV) + CORRIGENDUM JUL. 2013 (EQV))

    National Standards Authority of Ireland

    Product Logo   

    IEC 61643-352 : 1ED 2018

    COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTION - PART 352: SELECTION AND APPLICATION PRINCIPLES FOR TELECOMMUNICATIONS AND SIGNALLING NETWORK SURGE ISOLATION TRANSFORMERS (SITS)

    International Electrotechnical Committee

    Product Logo   

    IEC 61643-351 : 1ED 2016

    COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 351: PERFORMANCE REQUIREMENTS AND TEST METHODS FOR TELECOMMUNICATIONS AND SIGNALLING NETWORK SURGE ISOLATION TRANSFORMERS (SIT)

    International Electrotechnical Committee

    Product Logo   

    IEC 61643-312 : 2013 COR 1 2013

    COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 312: SELECTION AND APPLICATION PRINCIPLES FOR GAS DISCHARGE TUBES

    International Electrotechnical Committee

    Product Logo   

    IEC 61643-311 : 2.0

    COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 311: PERFORMANCE REQUIREMENTS AND TEST CIRCUITS FOR GAS DISCHARGE TUBES (GDT)

    International Electrotechnical Committee

    Product Logo   

    I.S. EN 116504:1996

    National Standards Authority of Ireland

    1 2 3 4 5 6 7 8 9 10 >