rhombus transformers & magnetic products industries inc. name: sheet: date: rhombus p/n: cust p/n: 15801 chemical lane, huntington beach, ca 92649-1595 phone: (714) 898-0960 fax: (714) 896-0971 www.rhombus-ind.com T-10506 3/24/94 1 of 1 schematic diagram flammability: materials used in the production of these units are ul94-vo and meet requirements of iec 695-2-2 needle flame test. isdn s-interface dual transformer compatible with at&t t7256 ul 1459 recognized r pri sec oscillation voltage = 500mv oscillation frequency = 10.0 khz 1. connect 2 & 3 2. connect 6 & 7 parts shipped in anti-static tubes. 18 pieces per tube turns ratio pins 1-4:16-13 & 5-8:12-9 1:2.5 & 1:2.5 parameter min. max. units open circuit inductance 22 mhy 1-4 (1) 5-8 (2) leakage inductance 1-4 (1) short 16-13 4 m hy 5-8 (2) short 12-9 4 m hy interwinding capacitance (c w/w ) 1-4 (1) & 16-13 (3) 100 pf 5-8 (2) & 12-9 (4) 100 pf distributed parallel capacitance 1-4 (1) 180 pf 5-8 (2) 100 pf primary dc resistance: 1-4 (1) ; 5-8 (2) 2.30 ohms secondary dc resistance:16-13 ;12-9 5.80 ohms isolation (hi-pot) 2400 v rms meets the pulse waveform template of ccitt i.430. primary is line side unbalanced current at te: d idc = 1 ma max. longitudinal conversion loss - 10khz to 300 khz: 60db min. physical dimensions in inches (mm)
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