FIGURE 1: SCHEMATIC DIAGRAM TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 OC ISDN U ISOLATION TRANSFORMER. PARAMETER SPEC LIMITS TYP. MAX. MIN. TURNS RATIO: 9-7 : 1-5 (SEC :PRI) -------- 1 : 1.25 FULL PRIMARY INDUCTANCE (1-5): VOLTAGE = 0.250Vrms FREQUENCY = 10 KHZ 26.0 PRIMARY DC BIAS CURRENT THD < 70dB 0.0 PRIMARY LEAKAGE INDUCTANCE: VOLTAGE = 0.250Vrms FREQUENCY = 10 KHZ -------- 29.5 UNITS -------- + 3% 33.0 mHy 1 9 PRI #1B -------95 60.0 mA PRIMARY (LINE SIDE) µHy 150 2 --------------- --------------- 8.0 12.0 Ohms Ohms LONGITUDINAL BALANCE OF PRI. 1KHz TO 4 KHz 4KHz TO 160 KHz -60 -58 -80 -70 --------------- dB dB Cw/w @ 10KHz (FULL PRI TO SEC) -------- 76 150.0 pF -------- -------- Vac 1500 SEC #1A 8 4 SECONDARY (CHIP SIDE) SEC #1B PRI #1A DCR: FULL PRIMARY (1-5) SECONDARY (9-7) HI-POT: 50/60Hz PRIMARY TO SECONDARY WHITE DOT DENOTES PIN #1 7 5 NOTE: 1) PRIMARY CENTER TAP IS FORMED BY CONNECTING PIN#2 TO PIN#4 FIGURE 2: PHYSICAL DIMENSIONS IN INCHES, (mm) PIN #1 NOTCH 1 3 4 P PM-IU05 M YYWW 2 10 9 8 7 5 6 .920 (23.36) MAX 1.070 (27.18) MAX .470 (11.93) MAX .020 (.51) .210 (5.33) TYP .150 (3.81) .800 (20.32) REV. 01/14/97 .300 (7.62) .045 (1.14) DESCRIPTION OF CHANGES POT CORE VERSION ISDNU TS2311, 10-PIN P Premier M Magnetics Inc. UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES DIMENSIONAL TOLERANCES ARE: DECIMALS ANGLES .XX + .05 + 0 O 30' .XXX + .010 DO NOT SCALE DRAWING ISDN U TRANSFOMER CONTROL DRAWING PREMIER P/N: PM-IU05 REVISION: 01/14/97 DRAWN BY: TOM O'NEIL REF: 2311TS SCALE: NONE SHEET: 1 OF 3