455

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The Tektronix 455 is a 50 MHz dual-trace solid-state portable oscilloscope. It is functionally similar to the 453 and can be seen as its successor.

The 455 makes extensive use of integrated circuits and is smaller and lighter than the 453.

Key Specifications

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Internals

The final stage of the 455 vertical amplifier employs a differential pair of triple-stacked NPN transistors. The purpose of the stacking is to get higher voltage swing and to eliminate the need for a heat sink.

The 455 uses a linear power supply.

Triggering is done with 155-0121-00 chips, one per channel.

Options

• Option 4: Modifies the 455 to meet EMC requirements of MIL-STD-461A
• Option 5: Adds a TV sync separator to the B2 module
• Option 7: Permits the 455 to be powered from a 12 or 24 V_DC source (making it compatible to the 1106 battery pack)
• Option 78: Changes the CRT to P11 phosphor

Pictures

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  Stacked vertical amp

CRTs used in the 455

Page	Part nos	Description	Designers	Used in
154-0731-00	154-0731-00	CRT		Telequipment D75 • 455 • 465 • 465B • 468

Custom ICs used in the 455

Page	Model	Part nos	Description	Designers	Used in
155-0121-00	M131A	155-0121-00	trigger subsystem	Larry Gagliani	455
155-0122-00	M132A	155-0122-00	sweep control	Larry Gagliani	455 • SC504
155-0123-00	M132	155-0123-00	sweep and pickoff control	Mike Metcalf • Jim Godwin	455
155-0124-00	M138	155-0124-00	horizontal preamplifier	Bob Nordstrom	455 • SC504 • 2221 • 2230 • 2232 • 2336 • 2337
155-0155-00	155-0155-00	155-0155-00	pre-amplifier		455 • 465M
155-0196-00	155-0196-00	155-0196-00	trigger		455 • 7D20
203-0130-90	M130	203-0130-90	preamplifier	Jim Woo	455 • 465M • 155-0155-00 • 155-0161-00