468: Difference between revisions

Revision as of 03:12, 15 December 2023

Tektronix 468

10/100 MHz Digital Storage Scope

Produced from 1980 to 1985

Manuals

Tektronix 468 manuals @ KO4BB
GPIB Option Installation

ROM Images

File	Pos.	Checksum
067-0989-00.bin	Service (repl. U565)	e7a227f3
160-0459-01.bin	U565	5d9decc9
160-0759-01.bin	U575	65850940

(All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix 468 is a digital/analog scope, essentially a 465B with a 25 MS/s, 8-bit digitizer added.

The 468 is controlled by an Intel 8085A processor.

Key Specifications

Bandwidth	100 MHz analog, 10 MHz digital repetitive, 2.5 MHz digital single-shot
Deflection	5 mV/Div to 5 V/Div, 1–2–5; CH1-CH2 cascaded – 1 mV/Div, 50 MHz
Sweep	20 ns/Div to 50 ms/Div (B) or 500 ms/Div (A), 1–2–5, ×10 magnifier to 2 ns/Div
Sampling rate	25 MS/s
Resolution	8 bit
Input impedance	1 MΩ // 20 pF
Z Axis	5 V_p-p (max. 25 V DC+peak AC) into 25 kΩ (down to 200 Ω at 2 MHz and above), 50 MHz
CRT	154-0731-00, 8×10 cm², P31 phosphor, 18.5 kV acceleration (–2.45 kV / +16 kV)
Power	90–210 V, 108–132 V, 198–242 V or 216–250 V; 48–440 Hz; 115 W/140 VA, max. 150 W/190 VA
Dimensions	18.3 cm × 29.2 cm × 55 cm (H×W×D)
Weight	15 kg (33 lb)
Options	Opt.02 − GPIB (A17 board) Opt.04 − EMI shielding Opt.05 − TV Sync Separator (A29 board) Opt.11 − Analog X-Y/Plotter Output (A27 board) Opt.12 − Averaging - Standard on SN B032430 and up. Opt.A2 − Operator's Manual says this is a 3 meter power cord. The Service manual shows that it's a power cord with UK plug.

Repair issues

→ see 468/Repairs page

Links

Tektronix 468 Repair Vol.1 / Vol.2 / HV multiplier/CRT replacement by vintageTek Museum @ YouTube
Tektronix 468 @ amplifier.cd

Documents Referencing 468

Document	Class	Title	Authors	Year	Links
Tekscope 1980 V12 N2.pdf	Article	New Products		1980	7854 • 468 • AA501 • SG505 • CG551AP • 1900 • 7612D
Tekscope 1980 V12 N3.pdf	Article	100 MHz Portable Oscilloscope Packs Digital Storage Power	Bruce Blair	1980	468

Pictures

front
top and A16
Storage & Display A16
right Trigger A12
left V Preamp A11
bottom Interface Board A15
rear
Processor Board Set
Microprocessor Board A21
Memory Board A18
Timebase/Power Supply A22
Timebase Oscillator A22
A17 GPIB OPT A2

Components

Some Parts Used in the 468

Part	Part Number(s)	Class	Description	Used in
154-0731-00	154-0731-00 • 154-0731-01 • 154-0731-02 • 154-0731-04	CRT	CRT	Telequipment D75 • 455 • 465 • 465B • 468
155-0022-00	155-0022-00 • 155-0022-01	Monolithic integrated circuit	analog multiplexer	147 • 148 • 149 • 335 • 468 • 1430 • 1441 • 1461 • 1900 • 1910 • 2220 • 2221 • 2230 • 5223 • 5403 • 5440 • 5441 • 5443 • 5444 • 5A38 • 7313 • 7403N • 7503 • 7504 • 7514 • 7603 • AN/USM-281C • 7613 • 7623 • 7623A • 7633 • 7704 • R7704 • 7704A • 7834 • 7844 • 7854 • R7912 • 7912AD • 7912HB • 7904 • R7903 • 7904A • 7934 • 7A12 • 7A18 • 7A18A • 7A18N • 7B52 • 7B53N • 7D10 • 7D11 • 7D12 • NT-7000 • P7001
155-0078-00	155-0078-xx • 155-0273-00 • 155-0274-00	Monolithic integrated circuit	broadband amplifier	464 • 465 • 466 • 468 • 475 • 475A • 475M • 485 • 7834 • 7844 • 7854 • 7904 • R7903 • R7912 • 7912AD • 7912HB • 7104 • 7A16A • 7A16P • 7A24 • 7A26 • 7A42 • 067-0587-01 • 067-0680-00 • AM503 • PG502 • PG508 • DC510 • DC5010 • FG5010
155-0115-00	155-0115-00	Hybrid integrated circuit	vertical amplifier	335 • 464 • 465 • 465B • 466 • 468
Intel 8085A	156-1088-00	Monolithic integrated circuit	8-bit microprocessor	308 • 468 • 4025 • 7A42 • 7D02 • AFG5101 • AFG5102 • PFG5105
Mostek MK36000		Monolithic integrated circuit	8K×8 mask-programmable ROM	468 • 7854 • FG5010
TRW TDC1007	156-1345-00	Monolithic integrated circuit	8-bit, 20 MSPS flash A/D converter	468

@@ Line 22: / Line 22: @@
 * [[Media:067-0989-00.bin |067-0989-00 Service ROM]]
 }}
-The '''Tektronix 468''' is a digital/analog scope, essentially a [[465B]] with an added 25 MS/s 8 bit digitizer.
+The '''Tektronix 468''' is a digital/analog scope, essentially a [[465B]] with a 25 MS/s, 8-bit digitizer added.
-The 468 uses the [[154-0731-00]] CRT.
 The 468 is controlled by an [[Intel 8085]]A processor.
@@ Line 34: / Line 33: @@
 {{Spec | Resolution      | 8 bit }}
 {{Spec | Input impedance | 1 MΩ // 20 pF }}
-{{Spec | Power           | 90–210 V, 108–132 V, 198–242 V or 216–250 V; 48–440 Hz }}
+{{Spec | Z Axis          | 5 V<sub>p-p</sub> (max. 25 V DC+peak AC) into 25 kΩ (down to 200 Ω at 2 MHz and above), 50 MHz }}
+{{Spec | CRT             | [[154-0731-00]], 8×10 cm², P31 [[phosphor]], 18.5 kV acceleration (–2.45 kV / +16 kV) }}
+{{Spec | Power           | 90–210 V, 108–132 V, 198–242 V or 216–250 V; 48–440 Hz; 115 W/140 VA, max. 150 W/190 VA }}
 {{Spec | Dimensions      | 18.3 cm × 29.2 cm × 55 cm (H×W×D) }}
 {{Spec | Weight          | 15 kg (33 lb) }}
@@ Line 48: / Line 49: @@
 ==Repair issues==
-&rarr; see [[468/Repairs]] page
+→ see [[468/Repairs]] page
 ==Links==