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109: Difference between revisions
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{{Instrument Sidebar | |||
|manufacturer=Tektronix | |||
|model=109 | |||
|class=Pulse generator | |||
|series= | |||
|summary=pulse generator | |||
|image=109 front crop.jpg | |||
|caption=Tek 109 front | |||
|introduced=1962 | |||
|discontinued=(?) | |||
|designers= | |||
|manuals= | |||
* [[Media:070-299.pdf|Tektronix 109 Manual]] (PDF) | |||
* [[Media:062-0105-00.pdf|017-0067-00 Charging Network Datasheet]] | |||
}} | |||
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 [[GR-874]] | |||
and has a specified rise time of 250 ps. | It uses a [[GR-874]] 50 Ω output connector and has a specified rise time of 250 ps. | ||
{{BeginSpecs}} | {{BeginSpecs}} | ||
| Line 8: | Line 22: | ||
{{Spec | Pulse frequency | 550 to 720 Hz }} | {{Spec | Pulse frequency | 550 to 720 Hz }} | ||
{{Spec | Pulse length | 0.5 ns to 100 ns with a single charge line between the two charge line connectors, or up to 300 ns at half pulse rate with one open-ended charge line (other connector grounded)}} | {{Spec | Pulse length | 0.5 ns to 100 ns with a single charge line between the two charge line connectors, or up to 300 ns at half pulse rate with one open-ended charge line (other connector grounded)}} | ||
{{Spec | Pulse amplitude | Internal supply: 0 to 50 V variable in three ranges (0.5 V, 5 V, 50 V), positive or negative, or external up to | {{Spec | Pulse amplitude | Internal supply: 0 to 50 V variable in three ranges (0.5 V, 5 V, 50 V), positive or negative, or external up to ±300 V}} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
==Internals== | ==Internals== | ||
[[File:Charge line animation.gif|250px|right]] | [[File:Charge line animation.gif|250px|right]] | ||
The 109's operating principle is that of a | The 109's operating principle is that of a [http://en.wikipedia.org/wiki/Pulse_forming_network#Transmission_line_PFNs charged transmission line pulse generator] with a mechanical reed switch and external 50 Ω transmission line/lines attached through two GR-874 50 Ω connectors. | ||
[http://en.wikipedia.org/wiki/Pulse_forming_network#Transmission_line_PFNs charged transmission line pulse generator] | |||
with a mechanical reed switch and external 50 Ω transmission line/lines attached through two GR-874 50 Ω connectors. | |||
The length of the external cables determines the impulse width. | The length of the external cables determines the impulse width. | ||
Using two transmission lines of non-equal length, alternating pulses having different width can be produced. | Using two transmission lines of non-equal length, alternating pulses having different width can be produced. | ||
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* [http://cds.linear.com/docs/en/application-note/an120f.pdf Jim Williams, Linear Technology Application Note 120, "1 ppm Settling Time Measurement for a Monolithic 18-Bit DAC"] - see Appendix H (p.30) | * [http://cds.linear.com/docs/en/application-note/an120f.pdf Jim Williams, Linear Technology Application Note 120, "1 ppm Settling Time Measurement for a Monolithic 18-Bit DAC"] - see Appendix H (p.30) | ||
* [ | * [https://w140.com/slac-tn-71-027.pdf Report comparing RG-58 with RG-174 using Tek 109 and Tek 661 (PDF)] | ||
* [ | * [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_other/109.html Tek 109 page @ amplifier.cd] | ||
==Pictures== | ==Pictures== | ||