ANALOG DEVICES OVA Output Transformers RTM/STM 1686/1696 /1736/1687/1697/1737 RTM/STM 1686 SPECIFICATIONS (typical @ +25C unless otherwise noted) ACCURACY? (after balancing) +2.4 arc minutes OPERATING FREQUENCY 400Hz LOAD CAPABILITY 5VA OPERATING TEMPERATURE -55C to +105C STORAGE TEMPERATURE ~55C to +125C VOLTAGE ISOLATION 500V de WEIGHT 21 ounces (580G) NOTES ' Accuracy applies over the full operating temperature range of the option and for: (a) +10% reference frequency and amplitude variation. (b) 10% harmonic distortion on the reference. (c) Any balanced load from no load to full load. Specifications subject to change without notice. APPLICATION OF THE RTM/STM1686 The RTM/STM1686 should be used in conjunction with the DTM1716 or the DTM1717 Digital Vector Generator and the SPA1695 Power Amplifier. ORDERING INFORMATION Line-to- Line Operating Output Voltage Reference Reference Part Number Temp. Range and Format Voltage Frequency STM1686611 -55C to +105C -11.8V Synchro 26V 400Hz STM1686612 -55C to +105C -90.0V Synchro -115V. 400Hz RTM1686518 -S5C to +105C = -11.8V Resolver 26V 400Hz Note: For options not shown above, consult the factory. TTT Fae] NEED NOT BE RECISION >to POWER SOURCE O14 OTMI7I6 | Ct B|sin -16V(PY 1 83 oer SING 400P + 75M sv on a cos to 118v wots eno ox ; [4 2 stage 1sv04 I wy cos] Feo] fom oro & vor 6 ST t688 3 so cook Os 83 source 15v0. bO Cos HO|----pe sa +O GNDIREF 820 82 notes v Roop T RY (11 $4 USED FOR RESOLVER OPTION L___ Pa Re IE TMa797 HAS PING 13 ANO V4 OMT TEC bp eno isics 83 33 bO sin S10 31 L_ THICK TRACK OR WIRF * Figure 1. Diagram Showing Connection of the STM1686 to a Ea DTM1716 or DTM1717 and SPA1695 (See Notes) RTM/STM1686 OUTLINE DIMENSIONS AND PIN CONNECTION DIAGRAM Dimensions shown in inches and (mm). 45111439 > BOTTOM VIEW {|= o1 cH 250 PIN DIA 0 040 + 0.001 GIA BRASS. HARD GOLD PLATE 025 16a |b Ge) = *S4 PIN PRESENT FOR RESOLVER OPTION ONLY SYNCHRO & RESOLVER CONVERTERS VOL. Il, 13-33RTM/STM 1696 SPECIFICATIONS (typical @ +25C -inless otherwise noted) ACCURACY (after balancing) +2.4 arc minutes OPERATING FREQUENCY 400Hz LOAD CAPABILITY 5VA OPERATING TEMPERATURE -55C to +105C STORAGE TEMPERATURE -55C to +125C VOLTAGE ISOLATION 500V de WEIGHT 22 ounces (620G) NOTE: "See STM1686 note 1. Specifications subject to change without notice. APPLICATION OF THE RTM/STM1696 The RTM/STM1696 should be used ir conjunction with the DSC1705 or DSC1706 Digital-to-Synchro (or Resolver) Con- verter and the SPA1695 Power Amplifier. ORDERING INFORMATION Line-to-Line Operating Output Voltage Reference Reference Part Number Temp. Range and Form.t Voltage Frequency STM1696611 -55C to +105C | 11.8V Synchro .26V 4001z STM1696612 -55C to +105C = 90.0V Synchro-115V 400Hz RTM 1696618 -55C to +105C -11.8V Resolver 26V 400Hz Note: For options not shown above, consult the factory. Gree] | weeonor at necision ore POWER SOURCE [51 pscwos Fre | SIN -BVIPH 18N a on mf ewe | su 3h cosol_ Ov he O4 - Gno BF rage sevop I sev cos| F#04 37 power e cub boo ono 38 sounce-m evo} z vo oF cas BO cos MOL----F t= st GNDIFEF) 520 8? NOTES v Ro RY We Gkusto row arsouven orrion we ne Sa eee or Siren be ano sc 30 3 pO SIN s1O st en snack ohtne Figure 2. Diagram Showing Connection of the STM1696 to a DSC1705 or DSC1706 and SPA1695 (See Notes} RTM/STM1686 OUTLINE DIMENSIONS AND PIN CONNECTION DIAGRAM Dimensions shown in inches and (mm). asian 20 60.8) v4 135.51 > 16 (40.61 sorvom view {01 caro ese bin ata 0089 000% Him anass RNB Gown Noonan tea) i361 84 PIN PRFSENT FOR RESOI VER OPTION ONLY RTM/STM 1736 SPECIFICATIONS (typical @ +25C unless otherwise noted) ACCURACY! (after balancing) +2.4 arc minutes OPERATING FREQUENCY 400Hz LOAD CAPABILITY 5VA OPERATING TEMPERATURE -55C to +105C STORAGE TEMPERATURE -55C to +125C VOLTAGE ISOLATION 500V de WEIGHT 19 ounces (540G) Note: * See STM1686 note 1. Specifications subject to change without nctice. APPLICATIONS OF THE RTM/STM1 736 The RTM/STM1736 should be used in conjunction with the DSC1605 or the DSC1606 Digital-to-Synchro Converter and the SPA1695 Power Amplifier. ORDERING INFORMATION Line-to-Lir.e Operating Output Voltage Reference Reference Part Number Temp. Range and Format Voltage Frequency STM1736611 -55C 10 +105C -11.8V Synchro. 26V 400Hz $TM1736612 -55C to +105C = 90.0V Synzhro:115V 400Hz RTM1736613 -55C to +105C | 11.8V Resolver 11,.8V 400Hz RTM1736614 -55C to +105C ~-26V Resolver 26V 400Hz RTM1736618 -55Cto #105C 11.8V Resolver 26V 400Hz Note: For options not shown above, consult the factor. NOTES FOR FIGURES 1, 2, AND 3: 1. The Sin F/B and the Cos F/B pins of the SPA1695 should be connected directly of the Sin and Cos terminals on the output transforme: at the transformer. VOL. Il, 13-34. SYNCHRO & RESOLVER CONVERTERS ames] AED NOT BF PRECISION one POWER SOURCE 3% oscrsos tor | sin -r5viP10- oy Bis sks SIN uP 19 VPIO + 1bM Bie cosop a8v wot avo 3 STAB e *15V 04 I o-15v cos| F804 Be POWER GND | ov orot Ba 18V0- to 33 32 v 4 v9 STMITI6 $0 cos s4O4----4= sa OGNOIREF, 82 si ou Ao AY Ov NOTES _ Ue R2 11) 54 USED FOR RESOLVER OPTION. Tp no sii o 12) DSC 1606 HAS PINS 11.92, 13, 1 OMITTED 3 si Fpo sw 31 sl THICK TRACK OR WIRE "} Figure 3. Diagram Showing Connection of the STM1736 to a DSC 1605 or DSC1606 and SPA1695 (See Notes) RTM/STM1736 OUTLINE DIMENSIONS AND PIN CONNECTION DIAGRAM Dimensions shown in inches and (mm), asia -| r 20 saa 1 1385) BOTTOM VIEW | [> o1 anos PIN DIA. 0.040 0.001 DIA. BRASS HARD GOLD PLATE Noon nh a) $4 PIN PRESENT FOH KESOLVER OF TION ONLY This is to compensate for any drop in voltage along the connections between the Sin O/P and Cos O/P pins of the amplifier and the transformer.2. The +15V and -15V pins of the SPA1695 should be connected to a regulated power supply in order to drive the internal operational amplifiers. The +15V(P) and -15V(P) are used for the output stage and these supplies need not be a precision source, the range of voltage when considering all tolerances including ripple, should be be- tween 14.75 and 20 volts. 3. The part of the 0 volt system local to the amplifier and converter should be tapped from the GND(SIG) pin on the transformer and should not interconnect with any other part of the O voit system by any other method (see above diagram). STM 1687 SPECIFICATIONS (typical @ +25C unless otherwise noted) ACCURACY! (after balancing) 2.4 arc minutes OPERATING FREQUENCY 60Hz LOAD CAPABILITY 5VA OPERATING TEMPERATURE -55C to +105C STORAGE TEMPERATURE -55C to +125C VOLTAGE ISOLATION 500V de WEIGHT 3 Ibs (1.34kg) Note: See STM1686 note 1. Specifications subject to change without notice. APPLICATION OF THE STM1687 The STM1687 should be used in conjunction with the DTM1716 or the DTM1717 Digital Vector Generator and the SPA1695 Power Amplifier. DIMENSIONS AND CONNECTIONS The STM1687 consists of a kit of two D3953 transformers and one A10163 transformer. These should be connected as shown in Figure 4. The dimensions are given in Figures 7 and 8. NEEO NOT BE PRECISION SOURCE SPATES5 5IN -15V ue HISVAPI ve ow SIN +15V o1a o12 019 STABILIZED 01 Suerty os o8 o7 o6 O58 04 GND pTma7i6 OR OTM1717 o3 oz oa. DYM175? HAS PINS 13 AND 14 OMITTED, A10163 THICK TRACK OR WIRE Figure 4. Diagram Showing the Connection of a STM1687 to a DTM1716 or DTM1717 and a SPAT69 ORDERING INFORMATION The transformer should be ordered as: STM1687622 50/60Hz, Synchro output, 90 volt signal, 115 volt reference. Note: For options not shown above, consult the factory. STM 1697 SPECIFICATIONS (typical @ +25C unless otherwise noted) ACCURACY! (after balancing) OPERATING FREQUENCY 60Hz LOAD CAPABILITY SVA OPERATING TEMPERATURE -55C to +105C STORAGE TEMPERATURE -55C to +125C VOLTAGE ISOLATION 500V de WEIGHT 3 Ibs (1.34kg) +2.4 arc minutes Note: 'See STM1686 note 1. Specifications subject to change without notice. APPLICATION OF THE STM1697 The $TM1697 should be used in conjunction with the DSC1705 or the DSC1706 Digital to Synchro Converter and the SPA1695 Power Amplifier. DIMENSIONS AND CONNECTIONS The STM1697 consists of a kit of two D3953 transformers and one A10033 transformer. These should be connected as shown in Figure 5. The dimensions are given in Figures 7 and 8. PRECISION POWER SOURCE -18V or SPA1695. Fie | sIN up +15 OM sin O13 on on STABILIZED] any, O10 SUPPLY os ou or 8 O85 o4 150 v Osc1705 Osc1706 o3 o2 o1 NOTE. DSC1706 HAS PINS 13 AND 14 OMITTED. AY R2 THICK TRACK OR WIRE Figure 5. Diagram Showing the Connection of a STM1697 to a DSC1706 or DSC1705 and a SPA1698 ORDERING INFORMATION This transformer should be ordered as: STM1697622 50/60Hz, Synchro output, 90 volt signal, 115 volt reference. Note: For options not shown above, consult the factory. SYNCHRO & RESOLVER CONVERTERS VOL. Il, 13-35 NEED NOT GE EeSTM 1737 SPECIFICATIONS (typical @ +25C unless otherwise noted) ACCURACY! (after balancing) +2.4 are minutes OPERATING FREQUENCY 50Hz LOAD CAPABILITY 5VA OPERATING TEMPERATURE -55C to +105C STORAGE TEMPERATURE 55C to +125C VOLTAGE ISOLATION 300V de WEIGHT 3 Ibs (1.34kg) Note: See STM1686 note 1. Specifications subject to change without notice. APPLICATION OF THE STM1737 The STM1737 should be used in con-unction with the DSC1605 or the DSC1606 Digital-to-Synchro Converter and the SPA1695 Power Amplifier. DIMENSIONS AND CONNECTIONS The STM1737 consists of a kit of two 13953 transformers and one A10033 transformer. These should be connected as shown in Figure 6. The dimensions are given in Figures 7 and 8. NEED NOT BE PRECISION SOURCE -16V om +18V 013 ow i Olt STABILIZED POWER O10 SUPPLY o9 GND sv oa o7 v STM1737622 o6 OSC 1305, oR os 0801306 oa 03953 o3 o2 a1 NOTE: 0SC1606 HAS PINS 11, 12, 14 AND 14 OMITTED. nz THICK TRACK OR WIRE Figure 6. Diagram Showing the Connection of a STM1737 to a DSC 1606 or DSC 1605 and a SPA1695 ORDERING INFORMATION This transformer should be ordered as: STM1737622 50/60Hz, Synchro output, 90 volt signal, 115 volt reference. Note: For options not shown above, consult the factory. OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 2.312 - e727 +~2.25 (57.15) 1.38 T (35.052) 1,94 (49.28) je 2.68 (73.11) / 15 frase MARKED WITH A eo eo o4 7333 WHITE SPOT FIX NG FOR 4mm oC SCREW IN 2 POSITIONS J N.B, PIN NUMBERS NOT MARKED ON TRANSFORMERS 56 78 2% 33) Figure 7. Outline Drawing and Dimensions of the D3953 Transformer _ h"9 (25.41wt ro mo T (18.08) WHITE 1 SPOT 0.40{10.2) 0,028 22 S.W.G _ (0.7112) 0.725 0.175(4.45 18.4 sorter 4.45) [118.42) (9.144) (6.594) FLYING LEAD - "B SIDE FLYING LEAD 20 A SIDE 1s WHITE SPOT PLAN VIEW OF TRANSFORMER SHOWING PIN ARRANGEMENT ON UNDERSIDE Figure 8. Outline Drawing and Dimensions of the A10163 and A10033 Transformers BALANCING SCOTT-T TRANSFORMERS (APPLIES ONLY TO TRANSFORMERS IN KIT FORM). . {Fe s1 en _ Ra cos PRIMARY SECONDARY - SZ Figure 9, Diagram Showing Balancing Circuit The Scott T transformers (two D3953 transformers) can be balanced by the following method: Connect the primary windings of the transformers to give a known angle input of 45. This can be clone by connecting the two coils in parallel to a 7V rms supply, thus giving an equal VOL. Il, 13-36 SYNCHRO & RESOLVER CONVERTERS sine and cosine contribution. The 3 wire output signal is then monitored on an Angle Position Indicator (e.g. API1620 or API1718) with no load attached. A resistor R1 should be connected across $1 and S3 until the API reads 45.00. A balanced load is then connected across $1, $2 and $3 the change in angle is monitored by the API and minimized by adding resistors (R2 and R3) in series with S1 and $3. R2 and R3 will have equal values. Increasing R2 and R3 will decrease the angle monitored by the API. Suggested initial values for R1 is 27kQ and for R2 and R3 is 3002. The transformer modules STM1686, 1696 and 1736 are balanced before leaving the factory.