7503: Difference between revisions

Revision as of 06:54, 24 January 2021

{{{manufacturer}}}
90 MHz non-storage mainframe Tektronix 7503, front view Produced from 1970 to 1972 Manuals 7503 Instruction Manual (partial, PDF) please add complete manual and/or schematics (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix 7503 is a 90 MHz 7000-series mainframe with three module bays, introduced in 1970. It was effectively replaced by the larger-screen 7603 in 1972.

The 7503 project was managed by Phil Crosby, and was supposed to be a 7504 but with one fewer plug-in. The 7503 was Tek's first scope to use a harmonica connector for inter-board wiring. Prior to this, inter-board wiring had either mainly been point-to-point soldered. Other approaches were taken on certain instruments, for example the 7704, in which pins sticking out of the chassis mate with holes in the boards that receive the pins and make electrical contact.

Specifications

Key Specifications

Bandwidth	90 MHz with 7A11, 7A16 (and faster plug-ins); 75 MHz with 7A12, 7A13, 7A14
Fastest calibrated sweep	5 ns/Div
CRT	154-0608-xx
Vertical modes	Left / Alt / Add / Chop / Right
Trigger Source	Left / Vert Mode / Right
Calibrator	4 mV to 40 V in five decade steps, 40 mA, 1 kHz ±0.5%
Outputs	Side panel: Vert signal, +Gate, +Sawtooth; At CRT: Camera power
Line Voltage	90-110 V / 104-126 V / 112-136 V / 180-220 V / 208-252 V / 224-272 V, 50—440 Hz
Power	Max. 258 W
Weight	21.3 kg / 47 lb (instrument only)
Rear connectors	High speed Z Axis input (BNC connector, 60 V_p-p, 75 MHz) High sensitivity Z Axis input (BNC connector, 2 V_p-p, 10 MHz) Two LEMO S-series connectors for probe power Amphenol 165-16 connector (J1075) for remote control (single sweep ready/reset signals)

Internals

Like other 75xx and 76xx mainframes and the 7504, the 7503 has a linear power supply, as opposed to the switchmode supplies used in the later 4-slot mainframes.

Pictures

Front
Plug-in bay
Plug-in connectors missing sides
Horizontal amp on top
Vertical amp on the side
Left view, delay cable, CRT
Left view, power supply
Right view, mains frequency transformer
Readout board
Right side connector panel
Rear

@@ Line 5: / Line 5: @@
 introduced=1970 |
 discontinued=1972 |
-summary=100 MHz non-storage mainframe|
+summary=90 MHz non-storage mainframe|
 manuals=
-* [http://w140.com/7503_imos.pdf Tektronix 7503 Manual (partial, PDF)]
+* [[Media:070-1039-00.pdf|7503 Instruction Manual]] (partial, PDF)
+* ''please add complete manual and/or schematics'' [[Category:Manual needed]]
 }}
-The '''Tektronix 7503''' is a 100 MHz 7000-series mainframe with 3 module bays.
+The '''Tektronix 7503''' is a 90 MHz 7000-series mainframe with three module bays, [[introduced in 1970]].  It was effectively replaced by the larger-screen [[7603]] in 1972.
-In contrast to most other 7000-series mainframes, which have switch mode power supplies,
-the 7503 uses a linear power supply.
 The 7503 project was managed by [[Phil Crosby]], and was supposed to be a [[7504]] but with one fewer plug-in.
@@ Line 22: / Line 21: @@
 ==Specifications==
-[[Category:Specifications needed]]''please add''
+{{BeginSpecs}}
+{{Spec | Bandwidth | 90 MHz with [[7A11]], [[7A16]] (and faster plug-ins); 75 MHz with [[7A12]], [[7A13]], [[7A14]] }}
+{{Spec | Fastest calibrated sweep | 5 ns/Div }}
+{{Spec | CRT | [[154-0608-00|154-0608-xx]] }}
+{{Spec | Vertical modes | Left / Alt / Add / Chop / Right }}
+{{Spec | Trigger Source | Left / Vert Mode / Right }}
+{{Spec | Calibrator | 4 mV to 40 V in five decade steps, 40 mA, 1 kHz ±0.5% }}
+{{Spec | Outputs | Side panel: Vert signal, +Gate, +Sawtooth; At CRT: Camera power }}
+{{Spec | Line Voltage | 90-110 V / 104-126 V / 112-136 V / 180-220 V / 208-252 V / 224-272 V, 50—440 Hz }}
+{{Spec | Power | Max. 258 W  }}
+{{Spec | Weight | 21.3 kg / 47 lb  (instrument only) }}
+{{Spec | Rear connectors |
+* High speed Z Axis input (BNC connector, 60 V<sub>p-p</sub>, 75 MHz)
+* High sensitivity Z Axis input (BNC connector, 2 V<sub>p-p</sub>, 10 MHz)
+* Two [[LEMO S-series connector]]s for [[probe power]]
+* [[Amphenol 165 series connectors|Amphenol 165-16 connector]] (J1075) for [[7503, 7504, 7904 remote control connector|remote control]] (single sweep ready/reset signals)
+}}
+{{EndSpecs}}
-CRT: [[154-0608-00|154-0608-xx]]
+==Internals==
+Like other 75xx and 76xx mainframes and the 7504, the 7503 has a linear power supply, as opposed to the switchmode supplies used in the later 4-slot mainframes.
 ==Pictures==
 <gallery>
 Tek 7503 front.JPG|Front