3A3: Difference between revisions

Revision as of 23:39, 16 September 2023

Tektronix 3A3
Dual Trace Differential Amplifier Plugin Type 3A3 Front View (SN 4990 up) Compatible with 560-series scopes Produced from 1964 to 1972 Manuals Tektronix 3A3 Manual (early) (PDF) / (DjVu) Tektronix 3A3 Manual (late) (PDF) / (DjVu) Tektronix 3A3 Factory Calibration Procedure, June 1968 Tektronix 3A3 Calibration Outline (PDF, OCR) (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix 3A3 is a dual trace differential amplifier for 560-series scopes. It was designed by Roy Hayes.

Key Specifications

Bandwidth	500 kHz or 5 kHz (switch-selectable)
Deflection	0.1 mV/Div to 10 V/Div, in 1−2−5 steps
Input impedance	1 MΩ // 47 pF

Internals

Early 3A3s use a 7586 Nuvistor for the front end cathode follower. Serial numbers 4990 and up use a dual JFET.

Pictures

Older version (below SN 4990, Nuvistor in input stage)

3A3 Front
3A3 Right
3A3 Left
3A3, Nuvistor in Input Stage

Newer version (from SN 4990 up, FET in input stage)

3A3 Front
3A3 Right
3A3 Left
3A3 Top
3A3 Bottom
3A3, Dual JFET in Input Stage

Some Parts Used in the 3A3

Part	Part Number(s)	Class	Description	Used in
6DJ8	154-0187-00 • 154-0305-00	Vacuum Tube (Dual Triode)	dual triode	132 • 161 • 310A • 316 • 317 • 502 • 502A • 503 • 504 • 506 • 515 • 516 • 519 • 526 • 529 • RM529 • 533 • 535 • 536 • 543 • 544 • 545 • 545A • 545B • 546 • 547 • 549 • 555 • 556 • 561A • 561S • 564 • 565 • 567 • 581 • 581A • 585 • 585A • 661 • 1A4 • 1S1 • 60 • 2A60 • 63 • 2A63 • 67 • 2B67 • 3A1 • 3A1S • 3A2 • 3A3 • 3A6 • 3A7 • 72 • 3A72 • 75 • 3A75 • 4S2 • 51 • 3B1 • 3B1S • 3B2 • 3B3 • 3B4 • 3M1 • 3S76 • 3T77 • 3T77A • 9A1 • 9A2 • 1121 • 80 • 81 • 82 • 86 • B • O • W • Z • Telequipment D56 • Telequipment S32A • Telequipment D52 • S-311 • Telequipment TD51 • Telequipment S52 • Telequipment S51 • Telequipment Type A • TU-4
7119	154-0340-00	Vacuum Tube (Dual Triode)	dual triode	067-0532-00 • 191 • 3A3 • 3B4 • 3B5 • 516 • 545B • 549 • 661 • Chemtrix 205
7586	154-0306-00	Vacuum Tube (Triode)	Nuvistor triode	M • 1A1 • 1A2 • 1A5 • 10A2 • 10A2A • 11B1 • 11B2A • 321 • 321A • 3A1 • 3A1S • 3A3 • 3A5 • 3A6 • 3A7 • 3A8 • 3A74 • 3S76 • 3T77 • 3T77A • 3B5 • 4S1 • 4S2 • 6R1 • 6R1A • 9A1 • 9A2 • 82 • 86 • S-311

@@ Line 1: / Line 1: @@
 {{Plugin Sidebar|
 manufacturer=Tektronix |series=560-series scopes |type=3A3 |
-summary=Dual trace differential amplifier plugin |
+summary=Dual Trace Differential Amplifier Plugin |
 image=3a3 front.jpg |
-caption=Type 3A3 front view (SN 4990 up)  |
+caption=Type 3A3 Front View (SN 4990 up)  |
 designers=Roy Hayes|
 introduced=1964 |
@@ Line 18: / Line 18: @@
 {{BeginSpecs}}
 {{Spec | Bandwidth | 500 kHz or 5 kHz (switch-selectable) }}
-{{Spec | Deflection | 0.1 mV/Div to 10 V/Div, 1−2−5 }}
+{{Spec | Deflection | 0.1 mV/Div to 10 V/Div, in 1−2−5 steps }}
 {{Spec | Input impedance | 1 MΩ // 47 pF }}
 {{EndSpecs}}
@@ Line 30: / Line 30: @@
 ===Older version (below SN 4990, Nuvistor in input stage)===
 <gallery>
-A3 front SN4990below.jpg | Front
+A3 front SN4990below.jpg | 3A3 Front
-A3_right_SN4990below.jpg | Right side
+A3_right_SN4990below.jpg | 3A3 Right
-A3_left_SN4990below.jpg  | Left side
+A3_left_SN4990below.jpg  | 3A3 Left
-a3 001.JPG               | Nuvistor in input stage
+a3 001.JPG               | 3A3, Nuvistor in Input Stage
 </gallery>
 ===Newer version (from SN 4990 up, FET in input stage)===
 <gallery>
-a3 front.jpg  | Front
+a3 front.jpg  | 3A3 Front
-a3 right.jpg  | Right side
+a3 right.jpg  | 3A3 Right
-a3 left.jpg   | Left side
+a3 left.jpg   | 3A3 Left
-a3 top.jpg    | Top
+a3 top.jpg    | 3A3 Top
-a3 bottom.jpg | Bottom
+a3 bottom.jpg | 3A3 Bottom
-A3 002.JPG    | Dual JFET in input stage
+A3 002.JPG    | 3A3, Dual JFET in Input Stage
 </gallery>