7603: Difference between revisions
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|series=7000-series scopes | |series=7000-series scopes | ||
|model=7603 | |model=7603 | ||
|summary=100 MHz non-storage mainframe | |||
|image=7603-4trace.jpg | |image=7603-4trace.jpg | ||
|caption=Tektronix 7603 | |caption=Tektronix 7603 | ||
|introduced=1972 | |introduced=1972 | ||
|discontinued= | |discontinued=1991 | ||
| | |designers= | ||
|manuals= | |manuals= | ||
* [[Media:Tek7603-r7603.pdf|7603/R7603 spec sheet]] | * [[Media:Tek7603-r7603.pdf | 7603/R7603 spec sheet]] | ||
* [[Media:070-1429-00.pdf| | * [[Media:070-1310-00.pdf | 7603/R7603 Operators Manual]] | ||
* [[Media:7603 PS Check.PDF|LVPS layout, help indications for testing]] | * [[Media:070-1429-00.pdf | 7603/R7603 Service Manual]] | ||
* [[Media:Tek 7603 power supply A10 and A11 schematic (redrawn).pdf|Newly drawn clear version of LVPS schematic]] | * [[Media:7603 PS Check.PDF | LVPS layout, help indications for testing]] | ||
* [[Media:Tek 7603 power supply A10 and A11 schematic (redrawn).pdf | Newly drawn clear version of LVPS schematic]] | |||
* <small>[http://bama.edebris.com/download/tek/7603/Tektronix_7603_Service_Nov1977.pdf Tek 7603 Manual] (PDF) @ BAMA</small> | * <small>[http://bama.edebris.com/download/tek/7603/Tektronix_7603_Service_Nov1977.pdf Tek 7603 Manual] (PDF) @ BAMA</small> | ||
<small> | <small> | ||
'''Modifications''' | '''Modifications''' | ||
* [[Media:7603mod36005.pdf|Mod. 36005 (1979): Prevent >1 GHz oscillations in vertical amplifier]] | * [[Media:7603mod36005.pdf | Mod. 36005 (1979): Prevent >1 GHz oscillations in vertical amplifier]] | ||
* [[040-0686-01|040-0686-01 (1984): Add pushbutton illumination for plugins]] | * [[040-0686-01 | 040-0686-01 (1984): Add pushbutton illumination for plugins]] | ||
* [ | * [[Media:040-0654-02.pdf | 040-0654-02 (1980): Add Readout]] | ||
* [ | * [[Media:040-0970-00.pdf | 040-0970-00 (1980): Add Fan]] | ||
* [ | * [[Media:050-0550-00.pdf | 050-0550-00 (1979): HV multiplier replacement]] | ||
* [ | * [[Media:050-1449-01.pdf | 050-1449-01 (1981): Fuse F1000 replacement]] | ||
* [ | * [[Media:050-1474-00.pdf | 050-1474-00 (1981): P31 phosphor CRT replacement]] | ||
</small> | </small> | ||
}} | }} | ||
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* Opt. 6 : P31 phosphor, 8 × 10 divisions of 1.22 cm (Tek [[154-0673-00]] tube, spectrum analyzer graticule) | * Opt. 6 : P31 phosphor, 8 × 10 divisions of 1.22 cm (Tek [[154-0673-00]] tube, spectrum analyzer graticule) | ||
}} | }} | ||
{{Spec | Vertical modes | Left / Alt / Add / Chop / Right }} | {{Spec | Vertical modes | Left / Alt / Add / Chop / Right }} | ||
{{Spec | Trigger Source | Left / Vert Mode / Right }} | {{Spec | Trigger Source | Left / Vert Mode / Right }} | ||
{{Spec | Inputs | Z Axis }} | {{Spec | Inputs | Z Axis }} | ||
{{Spec | Outputs | Camera power, Vert signal, +Gate, +Sawtooth }} | {{Spec | Outputs | Camera power, Vert signal, +Gate, +Sawtooth }} | ||
{{Spec | Power | 100 / 110 / 120 / 200 / 220 / 240 V, +/- 10%, 50—440 Hz, max. 170 W }} | {{Spec | Power | 100 / 110 / 120 / 200 / 220 / 240 V, +/- 10%, 50—440 Hz, max. 170 W }} | ||
{{Spec | Weight | 13.6 kg / 30 lb (instrument only) }} | {{Spec | Weight | 13.6 kg / 30 lb (instrument only) }} | ||
{{Spec | Operating Environment | 0°C – +50°C, < 15,000 ft }} | {{Spec | Operating Environment | 0°C – +50°C, < 15,000 ft }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
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As some options became standard (e.g. built-in fan) some numbers were assigned twice. | As some options became standard (e.g. built-in fan) some numbers were assigned twice. | ||
Later models were equipped with an [[IEC connector|IEC320 mains socket]], making all A''x'' (power cable style) options obsolete. | Later models were equipped with an [[IEC connector|IEC320 mains socket]], making all A''x'' (power cable style) options obsolete. | ||
<small> | |||
<div style="column-count:2;-moz-column-count:2;-webkit-column-count:2"> | <div style="column-count:2;-moz-column-count:2;-webkit-column-count:2"> | ||
* Opt.1: Without readout (= 7603N) | * Opt.1: Without readout (= 7603N) | ||
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* Opt.77: P7 phosphor with spectrum analyzer graticule | * Opt.77: P7 phosphor with spectrum analyzer graticule | ||
* Opt.78: P11 phosphor | * Opt.78: P11 phosphor | ||
</div> | </div> | ||
</small> | |||
==Links== | |||
* [http://amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_mainframe/rep-und-kal-7603/Reparaturbericht%20TEKTRONIX%207603.htm Detailed repair report @ amplifier.cd (German)] / [https://translate.google.com/translate?sl=auto&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&u=http%3A%2F%2Famplifier.cd%2FTest_Equipment%2FTektronix%2FTektronix_7000_series_mainframe%2Frep-und-kal-7603%2FReparaturbericht%2520TEKTRONIX%25207603.htm (translated)] | |||
* [http://www.barrytech.com/tektronix/tek7000/tek7603.html Tek 7603 @ barrytech.com] | |||
* [http://www.teknetelectronics.com/DataSheet/TEKTRONIX/TEKTR_760381630.pdf Catalog page with specs] | |||
* [http://bee.mif.pg.gda.pl/ciasteczkowypotwor/Tek/100NIKON/tektronix_7603_repair.pdf Repair Report #2] | |||
* [http://scopeboy.com/scopeblog/?p=183 Repair Report #3] | |||
* [http://www.jvgavila.com/tek7603.htm Repair Report #4] - 7603 with [[7D20]] | |||
* [http://www.jvgavila.com/tek7603.htm EB5AGV's Tektronix R7603 / 7D20 page] | |||
* [http://www.controlelectronics.com.au/used/refurbished.html Picture of a completely disassembled 7603] | |||
* [http://hakanh.com/dl/7603recap.htm Håkan's 7603 PSU re-cap] | |||
* [https://www.youtube.com/watch?v=WPny2YtwCFg Zenwizard Studios - Tektronix 7603 Lab Check in and Calibration] | |||
{{Documents|Link=7603}} | |||
==Internals== | ==Internals== | ||
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==Modifications== | ==Modifications== | ||
===Reduce ringing in vertical amplifier=== | |||
[[Media:7603mod36005.pdf|Official Modification 36005]] added a ground strap to the vertical amplifier to prevent >1 GHz oscillations. | [[Media:7603mod36005.pdf|Official Modification 36005]] added a ground strap to the vertical amplifier to prevent >1 GHz oscillations. | ||
===Plugin backlight power=== | |||
Like the other 76xx models, the 7603 has a linear supply which does not provide [[7000 Series plug-in interface|+5 V for lights (A9)]]. | Like the other 76xx models, the 7603 has a linear supply which does not provide [[7000 Series plug-in interface|+5 V for lights (A9)]]. | ||
There was an [[Media:040-0686-01.pdf|official Tek modification to add pushbutton illumination for plugins]], | There was an [[Media:040-0686-01.pdf|official Tek modification to add pushbutton illumination for plugins]], which involves adding a regulator, but there is also a quick'n'dirty method from Rolynn Prechtl: | ||
which involves adding a regulator, but there is also a quick'n'dirty method from Rolynn Prechtl: | |||
<blockquote> | <blockquote> | ||
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regulated supply. | regulated supply. | ||
</blockquote> | </blockquote> | ||
Alternative addition of a simple buck regulator module is depicted in the [[7603#Modifications 2 | modifications gallery]] below. | |||
==Prices== | ==Prices== | ||
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|align=right| $4,235 | |align=right| $4,235 | ||
|- | |- | ||
! | ! In 2023 Dollars | ||
|align=right| $ | |align=right| $11,100 | ||
|align=right| $ | |align=right| $9,700 | ||
|align=right| $ | |align=right| $8,400 | ||
|align=right| $ | |align=right| $8,500 | ||
|align=right| $ | |align=right| $9,900 | ||
|- | |- | ||
!rowspan=2| Mainframe with 2 × [[7A18]] + [[7B53]] | !rowspan=2| Mainframe with 2 × [[7A18]] + [[7B53]] | ||
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|align=right| $10,315 | |align=right| $10,315 | ||
|- | |- | ||
! | ! In 2023 Dollars | ||
|align=right| $ | |align=right| $24,300 | ||
|align=right| $ | |align=right| $21,300 | ||
|align=right| $ | |align=right| $19,500 | ||
|align=right| $ | |align=right| $20,300 | ||
|align=right| $ | |align=right| $24,200 | ||
|} | |} | ||
==Pictures== | ==Pictures== | ||
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Tek-7603-front.jpg | Tektronix 7603, front view | Tek-7603-front.jpg | Tektronix 7603, front view | ||
Tek 7603 opt8.jpg | 7603 Option 8 (blue P11 phosphor) | Tek 7603 opt8.jpg | 7603 Option 8 (blue P11 phosphor) | ||
Tek 7603 f.jpg | 7603 demonstrating use of front panel calibrator | |||
Tek-R7603.jpg | R7603 | Tek-R7603.jpg | R7603 | ||
R7603 opt20 rear.jpg|R7603 Opt 20 rear (with [[GPIB]] connector for [[7D20]] | |||
R7603 opt20 rear detail.jpg|R7603 Opt 20 rear (with [[GPIB]] connector for [[7D20]] | |||
Late 7603 with digital readout.jpg | Late model [[7603]] with [[7000 series readout system#Microcontroller-based Readout Board|microprocessor-based readout]] | |||
</gallery> | </gallery> | ||
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</gallery> | </gallery> | ||
{{ | ==Components== | ||
{{Parts|7603}} | |||
{{Custom ICs|7000 series readout system}} | {{Custom ICs|7000 series readout system}} | ||
[[Category:7000 series non-storage mainframes]] | [[Category:7000 series non-storage mainframes]] | ||
[[Category:7000 series mainframes with linear power supplies]] | |||
Latest revision as of 09:01, 28 October 2024
The Tektronix 7603 is a general-purpose 100 MHz non-storage, large-screen scope that takes two 7000-series vertical plug-ins and one 7000-series horizontal plug-in.
Variants include the a rack-mount version (R7603), and the AN/USM 281C, a ruggedized 7603 without readout (was also known as 7603N Option 11S) that includes two AM-6565 (7A15AN11) single-trace amplifiers, a TD-1085 (7B53AN11) dual time base, and a clip-on front panel cover with probes and accessories.
Key Specifications
| Bandwidth | 100 MHz with 7A11, 7A16, 7A17, 7A24, 7A26; 110 MHz with 7A19, 70 MHz with 7A18 |
|---|---|
| Fastest calibrated sweep | 5 ns/Div |
| CRT |
|
| Vertical modes | Left / Alt / Add / Chop / Right |
| Trigger Source | Left / Vert Mode / Right |
| Inputs | Z Axis |
| Outputs | Camera power, Vert signal, +Gate, +Sawtooth |
| Power | 100 / 110 / 120 / 200 / 220 / 240 V, +/- 10%, 50—440 Hz, max. 170 W |
| Weight | 13.6 kg / 30 lb (instrument only) |
| Operating Environment | 0°C – +50°C, < 15,000 ft |
Options
Due to the long production time of the 7603 many options were available. As some options became standard (e.g. built-in fan) some numbers were assigned twice. Later models were equipped with an IEC320 mains socket, making all Ax (power cable style) options obsolete.
- Opt.1: Without readout (= 7603N)
- Opt.3: Extra EMI shielding
- Opt.4/Opt.13: Maximum-brightness CRT with reduced area (8x10 cm graticule)
- Opt.5: Fan
- Opt.5 (later models): 400 Hz line frequency
- Opt.6: Spectrum analyzer graticule
- Opt.7: Without Signals Out
- Opt.8: P11 phosphor
- Opt.8 (later models): protective front panel cover, 7603 only
- Opt.11S: Ruggedized variant AN/USM 281C, specified at 50 MHz
- Opt.20: Rear GPIB socket for 7D20, removes +Sawtooth, +Gate, vertical signal outputs, R7603 only
- Opt.76: P7 phosphor
- Opt.77: P7 phosphor with spectrum analyzer graticule
- Opt.78: P11 phosphor
Links
- Detailed repair report @ amplifier.cd (German) / (translated)
- Tek 7603 @ barrytech.com
- Catalog page with specs
- Repair Report #2
- Repair Report #3
- Repair Report #4 - 7603 with 7D20
- EB5AGV's Tektronix R7603 / 7D20 page
- Picture of a completely disassembled 7603
- Håkan's 7603 PSU re-cap
- Zenwizard Studios - Tektronix 7603 Lab Check in and Calibration
Documents Referencing 7603
| Document | Class | Title | Authors | Year | Links |
|---|---|---|---|---|---|
| 7000 series brochure March 1973.pdf | Brochure | 7000 series brochure, March 1973 | 1973 | 7A11 • 7A12 • 7A13 • 7A14 • 7A15A • 7A16A • 7A17 • 7A18 • 7A19 • 7A21N • 7A22 • 7B50 • 7B53A • 7B70 • 7B71 • 7B92 • 7CT1N • 7D11 • 7D13 • 7D14 • 7D15 • 7M11 • 7L12 • 7S11 • 7S12 • 7T11 • 7704A • R7704 • 7904 • R7903 • 7603 • R7603 • 7403N • R7403N • 7313 • R7313 • 7613 • R7613 • 7623 • R7623 • P7001 | |
| Tekscope 1977 V9 N1.pdf | Article | Counter and Oscilloscope Combination Makes Difficult Measurements | Emory Harry | 1977 | DC505A • 7B53A • 7A18 • 7603 |
Internals
The 7603 was made in various versions for many years, with revisions to some subassemblies like the vertical output amplifier and HV circuits. A fan is optional.
The vertical output amplifier is built around a 155-0080-00 hybrid (U450). CRT deflection plates are not distributed.
Other custom Tek ICs used include 155-0011-00 clock & chop blanking (U55), 155-0022-00 vertical channel switch (U214), 155-0022-00 trigger channel switch (U324),and the 7000 series readout system chips.
Modifications
Reduce ringing in vertical amplifier
Official Modification 36005 added a ground strap to the vertical amplifier to prevent >1 GHz oscillations.
Plugin backlight power
Like the other 76xx models, the 7603 has a linear supply which does not provide +5 V for lights (A9). There was an official Tek modification to add pushbutton illumination for plugins, which involves adding a regulator, but there is also a quick'n'dirty method from Rolynn Prechtl:
I've done multiple units the cheap and dirty way. No additional regulator, no pulling the LVPS to find a place to add extra components and the best part, no cost.
Look for P90 and P10 on the rear edge of the Main Interface ECB (left side as I remember).
Connect P10-1 (GND) P90-7 or 8 (GND).
Connect P10-2 (+5 V) to P90-4 (+5 V).
Two wires and you're done.
Have experienced no problems with the extra current demand from the +5V regulated supply.
Alternative addition of a simple buck regulator module is depicted in the modifications gallery below.
Prices
| Year | 1973 | 1976 | 1980 | 1984 | 1990 | |
|---|---|---|---|---|---|---|
| Mainframe only | Catalog price | $1,600 | $1,800 | $2,260 | $2,865 | $4,235 |
| In 2023 Dollars | $11,100 | $9,700 | $8,400 | $8,500 | $9,900 | |
| Mainframe with 2 × 7A18 + 7B53 | Catalog price | $3,520 | $3,955 | $5,225 | $6,880 | $10,315 |
| In 2023 Dollars | $24,300 | $21,300 | $19,500 | $20,300 | $24,200 |
Pictures
-
Tektronix 7603, front view with display
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Tektronix 7603, front view
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7603 Option 8 (blue P11 phosphor)
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7603 demonstrating use of front panel calibrator
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R7603
-
-
-
Late model 7603 with microprocessor-based readout
Internal
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7603, left side - center left: vertical amplifier
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7603, right side - left: calibrator, center left: readout, center right: cover of HV board
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7603, top view - top: Z axis board, bottom: horizontal amplifier board
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HV board (below SN B330000)
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HV board (later version, DC restorer circuits on daughter boards, neons)
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Interior view of rear panel showing part of LV regulator board (version without fan)
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Rear view with LV regulator board flipped out (version without fan)
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Low voltage regulator board
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Low voltage regulator board fixed for maintenance
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Bottom view of backplane. Backplane interconnect board is seen in center, vertical interface and trigger selector piggyback boards on left/top left, logic board on right.
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Logic board (normally situated on back of main interconnect facing the PSU)
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Trig Select and Vertical Interface boards
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Backplane interconnect without Vertical Interface and Trigger Selector piggyback boards
Modifications
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Pushbutton illumination supply using a small step-down regulator module
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-
Components
Some Parts Used in the 7603