Hickok600_manual_retyped 电路图.pdf
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1、OPERATING INSTRUCTIONS for DYNAMIC MUTUAL CONDUCTANCE TUBE TESTER MODEL 600 The instrument packed herewith is:_ 1. Model 600 Vacuum Tube Tester_ Accessories included with the Model 600 tester are: 1 - Booklet Instructions for Model 600_ 1 Grid lead with Clip_ Serial Number_ Signed:_ Instruction for
2、operation of Model 600. Read These Instructions Through Before Attempting to operate the tester. 1. This instrument is designed to operate on 60 cycles 110-125 volt power source. It can be used on frequencies from 50 to 400 cycles, 110-120 volts. 2. There are two rectifier tubes, an 83 and a 5Y3GT,
3、necessary to operate this tester. They are included. The fuse lamp is a standard #81 auto lamp. The neon lamp is a General Electric,1/4 watt, 110 volt, candelabra base signal lamp. 3. LINE VOLTAGE ADJUSTMENT. After the power is turned on, press the push switch P7 which will cause the pointer of the
4、meter to move up the scale. The button P7 is held down and the knob, LINE ADJUST, is turned until the meter pointer rests exactly over the mark, LINE TEST, at the centre of the meter scale. This estab- lishes standard voltages on the tube. Make final line adjustment after the tube being tested is pl
5、aced in its socket. 4. SELECTORS. The row of the selector knobs across the centre of the control panel is for the purpose of conducting proper voltages to the tubes base pins. The operation of setting these selector knobs is similar to dialing a telephone number. On the roll chart, below the word SE
6、LECTORS appear the dialing numbers. These dialing numbers consist of two letters and five figures. Example: JR- 6237-5. Starting at the left, the first knob (FIL) is turned until it points at the letter J, the second knob (FIL) is turned to R, the third knob (GRID) to 6, the fourth (PLATE) to 2, the
7、 fifth (SCREEN) to 3, the sixth (CATHODE) to 7, and the seventh (SUPRESSOR) to 5. These selector switches are electrically interlocked so that it is impossible to connect two different voltages to the same tube pin. Thus accidental shorts are avoided. The selector system is designed to minimize sele
8、ctor settings. For example the filament setting is nearly always JR. These two knobs seldom need resetting. Also in testing duo-diode-triode tubes the amount of selector setting has been reduced to a minimum. 5. SHORT TEST. The SHORTS switch has six positions. The first five are used in testing the
9、tube for shorts. The sixth position TUBE TEST is used when indicating mutual conductance. Use the TUBE TEST position only if the tube has no shorts. Turning the SHORTS switch success- ively through the positions 1-2-3-4-5 connects the various elements in turn across the test voltage. Tubes having sh
10、orted elements will complete the cir- cuit and cause the neon lamp to glow. Tubes may be tested for shorts either hot or cold. A short is indicated by a steady glow on both plates of the neon lamp. A momentary flash of the neon lamp as the shorts switch is turned from one position to another should
11、be disregarded. This flashing is caused by the charging of a condenser in the short test circuit. A shorted tube should be discarded without 1 RadioFans.CN 收音机爱 好者资料库 further test. With tubes having more than one section such as the 6J6, make short test for each section. Locating shorted filaments.
12、In the following table(X) under any SHORT switch position indicates that the neon lamp glows in that position. KIND OF SHORT 1 2 345 FIL - CATHODE X FIL - GRID X X X FIL - PLATE X X XX FIL - SCREEN X XXX FIL - SUP X GRID - CATHODE X X X X GRID - PLATE X GRID - SCREEN X XX GRID - SUP X X PLATE - SCRE
13、EN X X PLATE - SUP X XX SCREEN - SUP X X XXX 6. MUTUAL CONDUCTANCE. Tubes having SHORTS should be discarded without fur- ther tests. If the tube passed the preliminary short test it is then tested for MUTUAL CONDUCTANCE which is the best test for amplifier tubes. Turn the SHORTS switch to TUBE TEST
14、position. On the roller chart, reading from left to right, op- posite the tube type appear: FIL. VOLT- AGE; SELECTORS, which were explained in paragraph (4) above; BIAS, which gives the setting for the BIAS dial; ENG, which gives the setting for the ENGLISH dial; PRESS, which indicates the push butt
15、on to be pressed for meter reading; MUTCOND, which gives the AVERAGE MUTUAL CON- DUCTANCE in MICROMHOS of the tube being tested. Under the heading NOTATIONS ap- pear special notes pertaining to the testing of the tube. The ENGLISH setting is used when it is desired to read the value of the tube on t
16、he RED-GREEN (ENGLISH) sector of the meter scale. When using the ENGLISH scale the MICROMHO readings are disregarded. NOTE Tubes having less than 500 Micromhos cannot be made to read in the GREEN sector of the meter scale. Such tubes list micromho reading only and are good if the reading is above a
17、specified minimum. Micromhos are indicated in three ranges 0-3000, 0-6000, 0-15,000. a. On the English dial are three dots stamped into the metal and filled with red lacquer. These dots are the points used in setting the micromho ranges. b. The dot near 73 on the dial is the setting point for the 30
18、00 micromho scale. c. The dot near 86 is the point for the 6000 micromho scale. d. The dot near 92 is the point for the 15,000 micromho scale. e. When reading micromhos the RED and GREEND sectors of the meter scale are disregarded. f. When testing for mutual conduct- ance the push switch P4Gm is pre
19、ssed. Gm is the symbol for mutual conductance. CAUTION: Do not press P4 when testing rectifier tubes. g. Tubes having more than one section, such as the 6J6, require different dial settings for each section. 7. RECTIFIER TUBE TEST. Rectifier tubes, including diode tubes and diode sections of multipl
20、e element tubes, hav- ing no mutual conductance are tested for emission only. a. The push switch P1 is used when testing detector diodes. It applies a low voltage which will not injure the delicate cathode. Good diodes will cause the pointer of the meter to move above the pointer marked DIODES O.K.
21、2 RadioFans.CN 收音机爱 好者资料库 b. The push switch P2 is used when testing cold cathode rectifiers such as the 0Z4. This applies a voltage suf- ficiently high to ionize the tube and start conduction. Good tubes will read in the green (GOOD) sector of the meter scale. c. The push switch P3 is used when tes
22、ting ordinary rectifier tubes, such as the 5Y3. This applies a medium voltage which is best adapted to reveal defects in this type of tube. Good tubes will read in the green (GOOD) sector of the meter scale. NOTE On the data chart a star (*) following P1,P2, and P3 indi- cates that the ENGLISH setti
23、ng only is used 8. GAS TEST. The push switches P5 and P6 are used to test an amplifier tube for gas content. 1. Set the ENGLISH dial at 73 b. The push switch P5 is pressed and held down while the BIAS dial is turned to cause the pointer of the meter to indicate 100 micromhos on the 0-3000 scale. c.
24、Hold down P5 and press P6. d. If the tube contains gas the pointer of the meter will move UP the scale. If the pointer movement is not more than one division of the scale the gas content is satisfactory. NOTE With some tubes, such as the type 45, the micromho reading cannot be brought down to 100 by
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