109: Difference between revisions
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The Tektronix Type 109 is a pulse generator | The Tektronix Type 109 is a pulse generator [[introduced in 1962]]. | ||
[[Connectors#GR-874|GR-874]] 50-ohm output connector and has a | It uses a [[Connectors#GR-874|GR-874]] 50-ohm output connector | ||
specified rise time of 250ps. Pulse width can be | and has a specified rise time of 250ps. | ||
programmed with a external 50 Ohm cable through | Pulse width can be programmed with a external 50 Ohm cable | ||
two GR-874 50-ohm connectors. The maximum allowed impulse width is 50nS. | through two GR-874 50-ohm connectors. | ||
The maximum allowed impulse width is 50nS. | |||
The internal voltage source is adjustable from 0V to 50V. | The internal voltage source is adjustable from 0V to 50V. | ||
Using an external voltage source, pulses up to 300V are possible. | Using an external voltage source, pulses up to 300V are possible. | ||
Revision as of 20:15, 28 September 2013
The Tektronix Type 109 is a pulse generator introduced in 1962. It uses a GR-874 50-ohm output connector and has a specified rise time of 250ps. Pulse width can be programmed with a external 50 Ohm cable through two GR-874 50-ohm connectors. The maximum allowed impulse width is 50nS. The internal voltage source is adjustable from 0V to 50V. Using an external voltage source, pulses up to 300V 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 600Hz 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 catched with 7904, S6, 7T11, 7M11. 2.5Vpk, Tr=240pS
