Jackson Tube Tester 636 instructions

Jackson
Model No. 636 DYNAMIC OUTPUT TUBE TESTER
Instructions for Tube Testing

This Dynamic tube tester incorporates the most advanced features of design and accuracy. The test method is a new advancement in the JACKSON DYNAMIC OUTPUT circuit which has established an excellent reputation for accuracy. The control arrangement is greatly simplified --- this permits easy and rapid testing of tubes. As is true with any fine piece of equipment, it is always well to thoroughly understand operation before attempting to use. Please read the following instructions CAREFULLY.

PURPOSE OF CONTROLS
OFF- ON SWITCH: This switch turns the tester on or off.
LINE CONTROL: The purpose of this control is to establish accurate voltage to the tube being tested. It is important that the meter needle be adjusted, by means of this control to read at the LINE point on the meter dial during all tests.
FILAMENT CONTROL: This control permits the correct selection of filament voltage for the tube to be tested. Before inserting any tube in the tester make sure that the Filament control is correctly set per listing given on the tube chart. A single setting of the FILAMENT control (such as 35-45) is suitable for any having a heater voltage between 35 V and 45 V. There is one spare position not in use at present.
SPECIAL TEST: Several tube types have their filament terminals in other than the standard position. The function of this switch is to properly set up the filament circuit. The majority of tubes are set with this switch in the NORMAL position. If other than a normal setting is required, the filament listing on the chart is followed by a letter and in this case the SPECIAL TEST switch must first be turned to the specified position.
CIRCUIT CONTROL: This control is used for making shorts and leakage tests and later on in the tube testing procedure, is used to select the proper element to secure a meter reading to determine the tubes output worth. When shorts test is made, a full rotation this control will test for any shorted or leaky condition at each and every tube element, including the shell on metal tube types.
PLATE: This control adjusts the meter to the proper condition for the tube type to be tested. This knob has been carefully adjusted at the factory – do not loosen set screw.
TEST BUTTONS: It is the purpose of these buttons to simultaneously arrange the circuit for the type to be tested, to remove the line control reading on the meter, and to secure a meter reading on the quality or output worth of the tube. Buttons J K L M N O P are lock type for circuit switching. Buttons Q R S are non-lock type. With proper buttons in this group (per chart) depressed, a reading of tube condition is obtained.
THE METER DIAL
Tubes which fall in the red portion of the dial are classified by the tester as defective. It will be noted that a tube which delivers an ultra high deflection is classified as questionable by the red area (extreme right on the dial). Such a tube may be questionable in performance because of the possibility of a “gassy” condition; or the defect might be misplaced elements or damaged connections in the base of the tube.

THE TUBE CHART
This chart lists the proper settings for the FILAMENT, PLATE, and CIRCUIT, controls. It also designates the proper TEST buttons that must be used. The FILAMENT (FIL) and PLATE (PLA) listings are self explanatory. The CIRCUIT TEST column in addition to designating the proper TEST buttons to be used. For example: if a CIRCUIT TEST listing of 2 J L S is given, the CIRCUIT control should first be set to “2” then the “ J & L “ buttons locked down and then the “S” button locked down to secure meter reading.

MANNER OF OPERATION
1- LINE VOLTAGE ADJUSTMENT: Turn LINE CONTROL in a clockwise direction, until the needle points to “LINE”
2- TESTS FOR SHORTS AND LEAKAGES: (all TEST BUTTONS must be in the “released” position for shorts and noise testing.) Set FILAMENT CONTROL as shown on chart for tube type to be tested. Types having a letter following filament setting turn SPECIAL TEST switch to a given position. All types not having above designations turn SPECIAL TEST switch to NORMAL position, insert tube in socket and allow time to heat.
Turn CIRCUIT CONTROL to all positions tapping tube at each position and watching leakage indicator, if lamp flashes or glows steadily the tube is shorted or leaky and is not satisfactory. Several types will show shorted even though normal. These types are indicated on the chart. If chart specifies that a shorted condition should exist at one or more of the positions of the circuit control and the tube under test fails to do so, it is an indication of a defective tube.

NOISE TEST: This test essentially duplicates the Shorts and Leakage test and is performed in the same manner. The indication is audible instead of visual. It is valuable in that it goes beyond the capabilities o0f the Shorts and Leakage test in catching intermittently “open” tube elements.
A completely shorted tube will produce a 60 cycle hum in the phones. An intermittent short or open will produce clicks when the tube is tapped.

3- QUALITY TEST: Set ALL CONTROLS to settings given on the chart for tube types to be tested. Press the correct TEST buttons as indicated under the column CIRCUIT TEST and note reading on the meter. If the meter pointer stops in the green section the tube is satisfactory. If the pointer stops in the red section, tube is unsatisfactory and should be replaced.
4- DUAL TEST: Tubes of the dual section type, several settings are given on the chart. When testing a tube of this type, repeat the above procedure for each set of test settings given on the chart. Press RELEASE key before setting up controls for each test condition.

5- TARGET TEST: The target sections of tuning indicator tubes are tested by setting the controls as shown under VIS and Visual Test on the chart. Press the correct TEST button and watch target element of the tube for glow.

BALLAST TUBES: Instructions for testing ballast tubes type tubes are in the ballast tube chart supplied with this tester.
6- DIAL LIGHTS, etc, are tested in the center receptacle of the 7 prong socket. Be sure SPECIAL TEST switch is at NORMAL and filament volts set for the rating of lamp to be tested



Settings for new Tube Types
TUBE TYPE FIL PLA CIRCUIT TEST NOTES
0Y4 -- 18 4 s
*1A3 1.4G 60 2 JOQ SHOWS SHORTED AT 1,2,5,6
1AB5 1.4 82 2 JLOR SHOWS SHORTED AT 7
1U4 1.4G 57 2 JLOQ SHOWS SHORTED AT 5
2D21 6.3B 16 6 S SHOWS SHORTED AT 4,5

SETTINGS FOR RECENTLY ANNOUNCED TUBE TYPES
(JACKSON MODELS 634, 636 &637 TESTERS)


TUBE TYPE - FIL. - PLA - CIRCUIT TEST
-------------------------------------------------------------
OY4 18 4 S
-------------------------------------------------------------
*lA3 l.4G 60 2 JCQ
Shows Shorted at 1,2,5 & 6
----------------------------------------
lAB5 l.4G 82 2 JLOR
Shows Shorted at 7
----------------------------------------
lU4 l.4G 57 2 JLOQ.
Shows Shorted at 5
----------------------------------------
2D21 6.3B 16 6 S
Shows Shorted at 4&5
----------------------------------------
3E6 l.4D 72 2 JLOR
Shows Shorted at 1
----------------------------------------
3LF4 1.4F 40 2 JLOR
Shows Shorted at 1
----------------------------------------
3V4 1.4D 38 2 JLOR
Shows Shorted at 1
----------------------------------------
6AJ5 6.3B 31 5 JOS
Shows Shorted at 2&4
----------------------------------------
6AK6 6.3B 45 5 JOS
Shows Shorted at 4
----------------------------------------
6AL5 6.3B 75 1 RS
75 5 RS
Shows Shorted at 4
----------------------------------------
6AN6 6.3 55 2 Q.
55 3 Q.
55 4 Q.
55 5 Q.
----------------------------------------
6AQ.5 6.3B 30 5 JOS
Shows Shorted at 1&4
----------------------------------------
6AQ6 6.3B 72 2 RS
65 5 Q
65 6 Q
Shows Shorted at 4
----------------------------------------
6AR6 6.3E 18 2 JMS
Shows Shorted at 7
----------------------------------------
6AS6 6.3B 70 5 JOS
Shows Shorted at 4
----------------------------------------
6AT6 6.3B 72 2 RS
65 5 Q
65 6 Q
Shows Shorted at 4
----------------------------------------
6AU6 6.3B 80 5 JOS
Shows Shorted at 4
----------------------------------------
6BA6 6.3B 58 5 JOS
Shows Shorted at 4
----------------------------------------
6BE6 6.3B 100 5 JOS
Shows Shorted at 4
----------------------------------------
6J4 6.3B 75 2 RS
Shows Shorted at 1,4,5&6
----------------------------------------
5J6 6.3B 38 1 OR
38 2 NR
Shows Shorted at 4
----------------------------------------
6N4 6.3B 35 5 S
Shows Shorted at 1,2,4&6
----------------------------------------
6S8 6.3F 77 6 S
65 2 Q
65 3 Q
65 5 Q
----------------------------------------
6SU7 6.3F 68 1 NS
68 4 LS
----------------------------------------
6SV7 6.3F 75 6 JLRS
65 4Q.
----------------------------------------
6SZ7 6.3F 72 2 RS
55 3 Q
65 4 Q
----------------------------------------
6X4 6.3B 18 1 S
18 6 S
Shows Shorted at 4
---------------------------------------
6AG7 6.3 38 2 JLOS
---------------------------------------
7F8 6.3A 60 3 S
60 6 S
Shows Shorted at 7
-----------------------------------
6G8/1206 6.3 46 2 JLNS
46 7 JLNS
--------------------------------------
7X7/XXFM 6.3 100 2 LS
65 5 Q
65 6 Q
--------------------------------------
12AT6 12.6B 72 2 RS
65 5 Q.
65 6 Q.
Shows Shorted at 4
-----------------------------------
12BA6 12.6B 58 5 JOS
Shows Shorted at 4
------------------------------------
12BE6 12.6B 100 5 JOS
Shows Shorted at 4
------------------------------------
12SW7 12.6E 60 6 S
65 3 Q
65 4 Q
------------------------------------
12SX7 12.6F 35 1 NS
35 4 LS
------------------------------------
12SY7 12.6 90 2 JLPS
-------------------------------------

14F8 12.6A 60 3 S
60 6 S
Shows Shorted at 7
-------------------------------------
28D7 25 28 4 KLR
28 5 JLPR

--------------------------------------
28Z5 12.6C 18 3 S
18 6S
Shows Shorted at 1
-------------------------------------
35W4 35.B 17 5 S
Shows Shorted at 4&6
-------------------------------------
45Z3 45 50 2 JOQ
Shows Shorted at 2&6
------------------------------------
50B5 50.B 17 5 JoS
Shows Shorted at 1&4
------------------------------------
117Z3 115.B 32 1 JNR
Shows Shorted at 1 & 5
--------------------------------------
9006 6.3B 75 1 JNQ
Shows Shorted at 1,2,4 & 5
-----------------------------------------------------------
Note:- As rapidly as possible the above types will be added to the regular tube charts
THE JACKSON ELECTRICAL INSTRUMENT CO. 18 South Patterson Boulevard
Dayton 1, Ohio