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310: Difference between revisions
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<gallery> | <gallery> | ||
File: Tek 310 on base.jpg|310 on fan base | |||
File:Wellenkino 310a.jpg|310A | File:Wellenkino 310a.jpg|310A | ||
</gallery> | </gallery> | ||
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This is a nearly true pure vacuum-tube scope, but in the power supply there are some silicon rectifiers | This is a nearly true pure vacuum-tube scope, but in the power supply there are some silicon rectifiers | ||
and in the circuit is one germanium point contact diode. | and in the circuit is one germanium point contact diode. | ||
It is sometimes very useful because it contains a | It is sometimes very useful because it contains a 1 kHz calibrator output with up to 100V level combined with a step attenuator. | ||
Early examples of the Tektronix Type 310A used commodity 3WPx CRTs. At some point in production, | Early examples of the Tektronix Type 310A used commodity 3WPx CRTs. At some point in production, | ||
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The scope cabinet was hinged to allow it to be opened like a book and operated for access to the circuitry for service purposes. The 310 and 310A were convection cooled, and required free access to air through the cabinet vent holes to avoid overheating. It contained a thermal cut-out to protect it from damage if the supply of cooling air was inadequate. The scope has feet on the rear panel to allow it to be operated on the floor with the front panel facing up, but the manual warns against prolonged operation in this orientation. Shortly after introduction, Tek offered a Fan Base accessory, which the scope would sit on and provide forced air for better cooling. While the scope had universal primary wiring options, the fan base did not. Separate models were available for 115 VAC or 230 VAC operation. | The scope cabinet was hinged to allow it to be opened like a book and operated for access to the circuitry for service purposes. The 310 and 310A were convection cooled, and required free access to air through the cabinet vent holes to avoid overheating. It contained a thermal cut-out to protect it from damage if the supply of cooling air was inadequate. The scope has feet on the rear panel to allow it to be operated on the floor with the front panel facing up, but the manual warns against prolonged operation in this orientation. Shortly after introduction, Tek offered a Fan Base accessory, which the scope would sit on and provide forced air for better cooling. While the scope had universal primary wiring options, the fan base did not. Separate models were available for 115 VAC or 230 VAC operation. | ||
Like most old Tektronix devices the mains transformer holds | Like most old Tektronix devices the mains transformer holds an indefinite(!) warranty, so hold an eye to that. The device goes away on ebay here often for 30€ to 60€. | ||
Fun on | Fun on | ||
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<gallery> | <gallery> | ||
File:Tek_310A.jpg|310A Front view | |||
File:310A_right.jpg|310A Right internal | |||
File:310A_foldoff.jpg|310A Folded off internal | |||
File:310A_left.jpg|310A Left internal | |||
File:310A_top.jpg|310A Top internal | |||
File:310A_bottom.jpg|310A Bottom special slot to access sweep trigger tubes | |||
File:310A_back.jpg|310A Rear view | |||
File:warranty.jpg|310A indefinite warranty to the Tektronix manufactured transformer | |||
File:310 1.jpg|310 right front | |||
File:310 2.jpg|310 front | |||
File:310 3.jpg|310 rear | |||
File:310 4.jpg|310 model | |||
File:310 5.jpg|310 right rear | |||
File:Tek 310 base.jpg|fan base in '57 catalog | File:Tek 310 base.jpg|fan base in '57 catalog | ||
File:Tek 310a left internal.jpg|310A Left Internal | File:Tek 310a left internal.jpg|310A Left Internal | ||
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[[Category:Monolithic tube scopes]] | [[Category:Monolithic tube scopes]] | ||