109: Difference between revisions
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The Tektronix Type 109 is a pulse generator [[introduced in 1962]]. | The '''Tektronix Type 109''' is a pulse generator [[introduced in 1962]]. | ||
It uses a [[Connectors#GR-874|GR-874]] 50 | It uses a [[Connectors#GR-874|GR-874]] 50 Ω output connector | ||
and has a specified rise time of | and has a specified rise time of 250 ps. | ||
Pulse width can be programmed with a external 50 | Pulse width can be programmed with a external 50 Ω cable | ||
through two GR-874 50 | through two GR-874 50 Ω connectors. | ||
The maximum allowed impulse width is | The maximum allowed impulse width is 50 ns. | ||
The internal voltage source is adjustable from | The internal voltage source is adjustable from 0 to 50 V. | ||
Using an external voltage source, pulses up to | Using an external voltage source, pulses up to 300 V are possible. | ||
The special feature of the 109 is that the switching action is made directly by a | The special feature of the 109 is that the switching action is made directly by a | ||
[[mercury switch]]. Frequency and life time was therefore fairly short, | [[mercury switch]]. Frequency and life time was therefore fairly short, | ||
about | about 600 Hz and 200 hours. | ||
So, if the operator forgets to shut the 109 down over the weekend and | So, if the operator forgets to shut the 109 down over the weekend and | ||
some holidays, the reed switch will need replacement. | some holidays, the reed switch will need replacement. | ||
Be aware during servicing, the thermal breaker is on | Be aware during servicing, the thermal breaker is on | ||
full mains and has no protection cover! | full mains and has no protection cover! | ||
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<gallery> | <gallery> | ||
Image:109_front.jpg|Front view | Image:109_front.jpg | Front view | ||
Image:109_right.jpg|Right internal | Image:109_right.jpg | Right internal | ||
Image:109_left.jpg|Left internal | Image:109_left.jpg | Left internal | ||
Image:109_back.jpg|Rear view Connector not original | Image:109_back.jpg | Rear view Connector not original | ||
Image:109_impulse.jpg|flying spot caught with 7904, S6, 7T11, 7M11. 2. | Image:109_impulse.jpg | flying spot caught with 7904, S6, 7T11, 7M11. 2.5 V<sub>pk</sub>, T<sub>r</sub>=240 ps | ||
File:Tek 109 schematic.png|schematic | File:Tek 109 schematic.png | schematic | ||
</gallery> | </gallery> | ||
[[Category:Pulse generators]] | [[Category:Pulse generators]] | ||
Revision as of 10:25, 19 July 2014
The Tektronix Type 109 is a pulse generator introduced in 1962. It uses a GR-874 50 Ω output connector and has a specified rise time of 250 ps. Pulse width can be programmed with a external 50 Ω cable through two GR-874 50 Ω connectors. The maximum allowed impulse width is 50 ns. The internal voltage source is adjustable from 0 to 50 V. Using an external voltage source, pulses up to 300 V are possible.
The special feature of the 109 is that the switching action is made directly by a mercury switch. Frequency and life time was therefore fairly short, about 600 Hz and 200 hours. So, if the operator forgets to shut the 109 down over the weekend and some holidays, the reed switch will need replacement.
Be aware during servicing, the thermal breaker is on full mains and has no protection cover!
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Front view
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Right internal
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Left internal
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Rear view Connector not original
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flying spot caught with 7904, S6, 7T11, 7M11. 2.5 Vpk, Tr=240 ps
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schematic
