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iET 1316, User And Service Manual, Page: 32 / 42

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Summary of Contents for 1316

Page 1: ...T Labs Inc 1316 im August 2005 1316 Oscillator User and Service Manual TEL 516 334 5959 800 899 8438 FAX 516 334 5988 534 Main Street Westbury NY 11590 IET LABS INC Formerly manufactured by GenRad www...

Page 2: ...PRECISION INSTRUMENTS FOR TEST AND MEASUREMENT TEL 516 334 5959 800 899 8438 FAX 516 334 5988 www ietlabs com 534 Main Street Westbury NY 11590 IET LABS INC...

Page 3: ...at no charge when returned to IET Changes in this product not approved by IET or application of voltages or currents greater than those allowed by the specifications shall void this warranty IET shal...

Page 4: ...ARE USED TAKE ALL MEASURES TO AVOID ACCIDENTAL CONTACT WITH ANY LIVE COMPONENTS USE MAXIMUM INSULATION AND MINIMIZE THE USE OF BARE CONDUCTORS WHEN USING THIS INSTRUMENT Use extreme caution when worki...

Page 5: ...rack 19 X 3 47 X 11 44 in 483 X 88 X 291 mm Weight Bench 26 lb 12 kg net 32 lb 14 kg shipping rack 21 lb 10 kg net 27 lb 12 kg shipping l_n _ Ph _a s e _1 Quadrature Output open circuit 1 25 0 25 V rm...

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Page 7: ...tter free operation A provision to introduce or extract a synchronizing signal is included in the oscillator circuit The extracted signal is independent of the output setting and can be used to operat...

Page 8: ...5 0 15 0 50 0 and 150 Ac meter with 0 15 and 0 50 V scales Stepless rotary potentiometer with limits labeled 0 and MAX Zero adjust screw Front panel white indicator lights Function Turns instrument o...

Page 9: ...wer plug Function Provides a reference output that lags the in phase reference by 90 at 1 25 V o c Provides a reference output in phase with power output at 1 25 V o c For synchronizing output freq ue...

Page 10: ...1 4 INTRODUCTION _ IN I lVIII Figure 1 3 Type 1621 Precision Capacitance Measurement System...

Page 11: ...r line to the power plug using the power cord supplied or an equivalent 3 conduc tor cord A single 8 10 A fuse protects both the low and high voltage circuits 2 4 BENCH MODELS 2 4 1 General 2 1 2 1 2...

Page 12: ...racks a Remove 4 dress panel screws A and slide the instrument out of the cabinet until the tracks are fully extended Continue pulling the instrument forward until motion along the tracks is stopped A...

Page 13: ...ent up slightly i Push the instrument back into the rack checking for smooth operation of the tracks and sl ide blocks NOTE The instrument is now readily accessible for behind the panel adjustments It...

Page 14: ...LLATION The lock range is 1 V rms input up to 10 V and the front panel frequency controls function as the phase adjustment As an output 0 3 V rms behind 27 kQ is available to lock the frequency of ano...

Page 15: ...INSTALLATION 2 5...

Page 16: ...ugged from the instrument In addition the center ground pin is longer which means that it mates first and disconnects last ensuring greater user protection from electric shock The panel connector is a...

Page 17: ...OFF If the instrument has been operating allow sufficient time for the meter indicator to stabilize near zero 3 1 3 1 3 2 3 2 b Adjust the meter zero adjust screw for a zero indication Gently tap the...

Page 18: ...utput frequency will lock to 3 2 OPERATION the external signal within the range 990 1010 Hz If the sync signal voltage is doubled the lock range also doubles 980 1 020 Hz The oscillator will remain sy...

Page 19: ...of the oscilloscope trigger circuits Counter trigger A counter can be driven from the EXT SYNC jack when more precise adjustment of frequency is desired or when the front panel output is not sufficien...

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Page 21: ...dge and is varied in smaller discrete steps by changing two conductance decades G The continuously adjustable decade varies the frequency by a_ltering the voltage across conductance g thereby changing...

Page 22: ...ations in any oscillator a loop gain of unity is necessary i e the gain from any one point in the circuit around the loop and back to that same point must be equal to one Thus 4 2 THEORY where GL loop...

Page 23: ...sistor RG Note that the same voltage E3 is across all three legs impedance divider resistance divider and RLl E3 E2 E4 E4 IR1 When an ordinary resistor is used for R1 the voltage drops across R1 and R...

Page 24: ...lass B output stage consist of composite states 015 018 Each pair is connected as a high input impedance unity gain stage Final output is provided by the collectors of 017 and 018 These two stages als...

Page 25: ...tering These characteristics are discussed in the following paragraphs 4 4 2 Output Characteristic A nominal 0 3 V rms output signal behind 27 kQ is available from the EXT SYNC jack The level of this...

Page 26: ...nimize the sync output signal For example if a 600 n source is used less than 20 mV will appear across the source 4 4 4 Input Frequency Selectivity The RC network in the oscillator used to determine t...

Page 27: ...fice for a Returned Material number Use of this number in correspondence and on a tag tied to the instrument will ensure proper handling and identification For instruments not covered by the warranty...

Page 28: ...er controls to measure period with a 100 MS gate time b Set the 1316 controls as follows POWER switch FREQUENCY Selectors OUTPUT VOLTAGE RANGE control OUTPUT ADJUST Control POWER 10 0 Hz 15 MAX c Obse...

Page 29: ...OUTPUT VOLTAGE RANGE switch to the desired range The value indicated by the voltmeter should be as listed in Table 5 3 Output Power Level The following procedure can be used to check the output power...

Page 30: ...REQUENCY SE LECTORS OUTPUT ADJUST OUTPUTVOLTAGERANGE 5 4 SERVICE 1 kHz Fully ccw 150 v CAUTION Before reconnecting the 1232 make sure that the oscillator OUTPUT ADJUST control is fully ccw h Connect t...

Page 31: ...of the shaft drive a machine tap a turn or two into the bushing to provide sufficient grip for easy separation If the retention spring in the knob falls out reinstall it in the interior notch with the...

Page 32: ...cy range is adjusted with the variable capacitor C5 All other ranges are adjusted w ith fixed value capacitors chosen at the factory 5 6 SERVICE Following is a recommended adjustment procedure for the...

Page 33: ...problems A correct voltage indicates an output transformer or power resistor problem Refer to the schematic diagram Figure 5 3 5 8 4 Excessive Distortion If there is excessive distortion at the POWER...

Page 34: ...Dial asm Range 5120 2450 24655 5120 2450 8 2 Knob asm OUTPUT ADJUST OUTPUT 5520 5221 24655 5520 5221 VOLTAGE RANGE including retainer 5220 5402 9 4 Knob asm FREQUENCY including 5520 5220 24655 5520 5...

Page 35: ...OII U U1111 7 MJJYI u E o _ _ tt Lt RlAD H S Ml E NOMJM L CICTSC CIJ IO AS RII f R ADIHG 1N VOt TS TAKCN AT IKHz lOY CIIT O EHC I T c O a 0 Ql 7 1 0 11 1 20 17 e Uc QIS li Q c e 5 13 Q 9 12 RI E I C I...

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Page 37: ...2 PCT 1 2W 112 PCT l 2W 1 ZPCT 1 2W 112 PCT li2W l 2 PCT l 2W 1 2 PCT li2W l 2PCT l 2W 1 2 PCT 1 2W 112 PCT l 2W 1 2 PCT 1 2W 1 2PCT 1 ZW 112PCT 1 4W 1 2 PCT l 4W 1 2 PCT l 4W 112PCT l 4W l 2PCT 114W...

Page 38: ...3 SWITCH ROTARY ASH 7890 551t0 24655 789D 5540 s 4 SWITCH ROTARY ASI4 7890 SSitl H655 789D 5541 s 5 SWITCH ROTARY ASM 7890 5542 24655 789D 5542 s 6 SWITCH ROTARY AS 1 7890 5543 24655 789D S543 T 1 TR...

Page 39: ...SISTOR 21114250 10 TIU NSIS TOR 2 N34 14 11 TRANSISTOR 2N3414 12 TRANS IST OR 2 N4250 13 TR NS STOR 2N3903 14 TRANSISTOR 2N3905 1 5 TRANSISTOR 2N2218 16 TRANSISTOR 2N2904 19 TRANSISTOR PN3391A 20 TRAN...

Page 40: ...COHP 2 2 K 5PCT l 4W 112 RES COMP 200 OHM 5PCT 1 4k 113 RES COMP 200 OHM 5PCT 1 4W 114 RES COMP 100 OHM 5PCT 1 W 115 RES COHP 1 0 K 5PCT 1 4W 116 RES COMP 1 0 K 5PCT 1 4W AR 150 RES COHP 2 7 OHM 5PCT...

Page 41: ...m _ A Y vw Etched circuit board assembty P N 1316 4700 for the Type 1316 Oscillator NOTE The board is shown foil side up The number appearing on the foil side is not the part number The dot on the foi...

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