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* [http://w140.com/tek_type_h_ocr.pdf Tektronix Type H Manual (later, PDF, OCR)] | * [http://w140.com/tek_type_h_ocr.pdf Tektronix Type H Manual (later, PDF, OCR)] | ||
* [http://w140.com/tek_type_h_schematics.pdf Tektronix Type H Schematics Only (PDF)] | * [http://w140.com/tek_type_h_schematics.pdf Tektronix Type H Schematics Only (PDF)] | ||
* [[Media:type_g_manual_110-008.pdf|Tektronix Type H Manual (sn 1102, PDF, OCR, bad-OCR)]] | * [[Media:type_g_manual_110-008.pdf|Tektronix Type H Manual (sn 1102, PDF, OCR, bad-OCR)]] | ||
* [[Media:tektronix_type_h_schem.pdf|Tektronix Type H Schematics Only (PDF, OCR, bad-OCR)]] | |||
* [[Media:tektronix_type_h_schem.pdf|Tektronix Type H Schematics Only (PDF, OCR)]] | |||
* [[Media:tek_type_h_fcp.pdf|Tektronix Type H Factory Calibration Procedure (PDF, OCR)]] | * [[Media:tek_type_h_fcp.pdf|Tektronix Type H Factory Calibration Procedure (PDF, OCR)]] | ||
}} | }} | ||
The '''Tektronix Type H''' is a single-channel plug-in for [[500-series scopes]]. | The '''Tektronix Type H''' is a single-channel, 15 MHz plug-in for [[500-series scopes]]. | ||
It provides two inputs and has a switch to select between them. | It provides two inputs and has a switch to select between them. | ||
A design compromise, Type H is not as fast as [[B|Type B]], but it is DC-coupled on all ranges. | |||
Type 53/54H was [[introduced in 1958]], along with the [[533]] and [[543]], renamed Type H in 1959, | Type 53/54H was [[introduced in 1958]], along with the [[533]] and [[543]], renamed Type H in 1959, | ||
and dropped after 1970. | and dropped after 1970. | ||
{{BeginSpecs}} | |||
{{Spec | Bandwidth | DC to 15 MHz }} | |||
{{Spec | Rise time | 20 ns }} | |||
{{Spec | Deflection | 5 mV/cm to 20 V/cm }} | |||
{{EndSpecs}} | |||
==Internals== | |||
The input is switched via a frequency-compensated attenuator network which is controlled by the Volts/cm switch. | |||
Later Type H models use a [[Turret attenuators|turret attenuator]]. | |||
Type H with S/N less than 10,000 have ordinary rotary switches. | |||
Input is then coupled to the paraphase amplifier or phase inverter made up of two [[12AU6]] pentode tubes, V3854 and V4854. | |||
This stage converts the input signal to a differential push-pull output. Output of this stage is then passed to the first cathode follower, made with a [[12AT7]] dual triode, V3863A and V3863B. The output from this cathode follower is then passed to the main amplifier made with a pair of [[12AU6]] pentodes, V3874 and V4874. The final output to the scope chassis is driven via final cathode follower with a [[12AT7]] dual triode tube, V3893A and V3893B, which drives pin 1 and 3 of the connector to drive the vertical amplifier inside the chassis. | |||
The tubes are heated from the +75 V<sub>DC</sub> heater supply available at pin 15 of the plug-in connector. This is to avoid any interference/hum from the regular AC heater supply at 60 Hz. | |||
==Pictures== | ==Pictures== | ||
| Line 37: | Line 47: | ||
Type_h_front.jpg | Type_h_front.jpg | ||
Type_h_rear.jpg | Type_h_rear.jpg | ||
Tek h schem early.png | Type_H-Top.jpg | Type H Top | ||
Tek h schem late.png | Type-H-Botttom.jpg | Type H Bottom | ||
Tek h turret schem.png | Type-H-Side.jpg | Type H Side | ||
Tek h schem early.png|Early schematic | |||
Tek h schem late.png|Late schematic | |||
Tek h turret schem.png|Turret attenuator schematic | |||
Tek type h bnc.jpg|Late model Type H with BNC inputs | Tek type h bnc.jpg|Late model Type H with BNC inputs | ||
Type_H-Grey.jpg | Type H Grey Knob | |||
Type_H-Turret.jpg | Type H with [[Turret attenuators|turret attenuator]] | |||
</gallery> | </gallery> | ||
[[Category:500 series plugins]] | [[Category:500 series plugins]] | ||