7603: Difference between revisions

{{Oscilloscope Sidebar|

title=Tektronix 7603|

image=Tek-7603-front.jpg|

caption=Tektronix 7603 |

introduced=1973 |

discontinued=1990 |

summary=100 MHz non-storage mainframe|

manuals=

* [http://www.ko4bb.com/manuals/download.php?file=Tektronix/Tektronix_-_76x3_Oscilloscope/Tektronix_7603_Service_Nov1977-hi-res.pdf Tektronix 7603 Manual (hires PDF, 60 MB)]

 

The '''Tektronix 7603''' is a general-purpose 100 MHz non-storage, large screen scope that takes

The '''AN/USM 281C''' is 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.

{{Spec | Bandwidth | 100 MHz with [[7A11]], [[7A16]], [[7A17]]; 110 MHz with [[7A19]], 70 MHz with [[7A18]] }}

{{Spec | CRT std. | P31 phosphor, 8 × 10 divisions of 1.22 cm (Tek [[T7400]]/[[154-0640-00]] tube); 15 kV acceleration (-3/+12); Option 8: P11 phosphor}}

{{Spec | CRT Opt. 4 | P31 phosphor, 8 × 10 divisions of 1.0 cm  (Tek [[154-0672-00]] tube); 18 kV acceleration}}

{{Spec | CRT Opt. 6 | P31 phosphor, 8 × 10 divisions of 1.22 cm  (Tek [[154-0673-00]] tube, spectrum analyzer graticule)}}

{{Spec | Line Voltage | 100 / 110 / 120 / 200 / 220 / 240 V, +/- 10%, 50—440 Hz }}

{{Spec | Power | Max. 170 W  }}

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 where assigned twice. Later models were equipped with an IEC socket, making all A''x'' options obsolete.

The 7603 was made in various versions for many years, with revisions to some subassemblies like the vertical output amplifier and HV circuits. It uses a linear power supply, a fan is optional. CRT deflection plates are not distributed. The vertical output amplifier is built around a [[155-0080-00]] hybrid (U450).  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.   

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:

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Connect P10-1 (gnd) P90-7 or 8 (gnd).

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Connect P10-2 (+5V) to P90-4 (+5V).

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! 2015 value

|align=right|  $8,500

|align=right|  $7,470

|align=right|  $6,480

|align=right|  $6,510

|align=right|  $7,650

! 2015 value

|align=right| $18,720

|align=right| $16,410

|align=right| $14,970

|align=right| $15,640

|align=right| $18,630

File:Tek-7603-front.jpg | Tektronix 7603, front view

File:Tek-7603-left.jpg   | 7603, left side - center left: vertical amplifier

File:Tek-7603-top.jpg    | 7603, top view - top: Z axis board, bottom: horizontal amplifier board

File:Tek-7603-bp.jpg     | Interior view of rear panel showing part of LV regulator board (version without fan)

File:Tek-7603-back-open.jpg | Rear view with LV regulator board flipped out (version without fan)

File:Tek-7603-lvreg.jpg | Low voltage regulator board

File:Tek-7603-bottom.jpg | 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.

File:Tek-7603-logic-board.jpg | Logic board (normally situated on back of main interconnect facing the PSU)

File:Tek-7603-vertif-trigselect.jpg | Trig Select and Vertical Interface boards

File:Tek-7603-interconnect.jpg | Backplane interconnect without Vertical Interface and Trigger Selector piggyback boards