MX-11769: Difference between revisions
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The designation is often used to refer to the format of the tube specified inside of the specification, as all iterations of the specification reuse the same format to facilitate backwards compatibility. | The designation is often used to refer to the format of the tube specified inside of the specification, as all iterations of the specification reuse the same format to facilitate backwards compatibility. | ||
The format is a modified version of the [[MX-10160]] format, with the key difference being a ribbon cable (often called pigtail) leading from contacts in the side of the image intensifier tube to a small electronic circuit, which can be plugged into compatible housings to allow [[External Gain Adjustment Circuit (EGAC)|manual gain]] adjustment, usually in the form of an potentiometer on the exterior of the housing. Usually the resistance of that potentiometer is around 180KΩ, where higher resitance leads to a higher gain. | The format is a modified version of the [[MX-10160]] format, with the key difference being a ribbon cable (often called pigtail) leading from contacts in the side of the image intensifier tube to a small electronic circuit, which can be plugged into compatible housings to allow [[External Gain Adjustment Circuit (EGAC)|manual gain]] adjustment, usually in the form of an potentiometer on the exterior of the housing. Usually the max. resistance of that potentiometer is around 180KΩ, where higher resitance leads to a higher gain. | ||
Its possible to convert any MX11769 to [[MX-10160]] format by desoldering the ribbon cable and replacing it with a resistor. The recommended type of resistor is a 0805 SMD resistor, with a value of 150-180KΩ depending on the desired gain. | Its possible to convert any MX11769 to [[MX-10160]] format by desoldering the ribbon cable and replacing it with a resistor. The recommended type of resistor is a 0805 SMD resistor, with a value of 150-180KΩ depending on the desired gain. A normal MX-11769 tube running without a resistor or with a resistor exceeding the 180KΩ mark will operate beyond maximum gain, likely shortening the lifespan of the image intensifier significantly. | ||
On newer tubes from [[L3Harris]] the ribbon cable is connected to the image intensifier using a plug instead of soldered pins. When removing the cable the tube will operate at full gain, making the image intensifiers quickly convertible to and from [[MX-10160]] format without the use of any tools. | On newer tubes from [[L3Harris]] and [[Elbit Systems Of America|Elbit]] the ribbon cable is connected to the image intensifier using a plug instead of soldered pins. When removing the cable the tube will operate at full gain, making the image intensifiers quickly convertible to and from [[MX-10160]] format without the use of any tools. | ||
== Devices == | == Devices == | ||
Revision as of 17:27, 29 June 2023
MX-11769 is a specification for image intensifier tubes for the U.S. military.
The designation is often used to refer to the format of the tube specified inside of the specification, as all iterations of the specification reuse the same format to facilitate backwards compatibility.
The format is a modified version of the MX-10160 format, with the key difference being a ribbon cable (often called pigtail) leading from contacts in the side of the image intensifier tube to a small electronic circuit, which can be plugged into compatible housings to allow manual gain adjustment, usually in the form of an potentiometer on the exterior of the housing. Usually the max. resistance of that potentiometer is around 180KΩ, where higher resitance leads to a higher gain.
Its possible to convert any MX11769 to MX-10160 format by desoldering the ribbon cable and replacing it with a resistor. The recommended type of resistor is a 0805 SMD resistor, with a value of 150-180KΩ depending on the desired gain. A normal MX-11769 tube running without a resistor or with a resistor exceeding the 180KΩ mark will operate beyond maximum gain, likely shortening the lifespan of the image intensifier significantly.
On newer tubes from L3Harris and Elbit the ribbon cable is connected to the image intensifier using a plug instead of soldered pins. When removing the cable the tube will operate at full gain, making the image intensifiers quickly convertible to and from MX-10160 format without the use of any tools.
Devices
The table below lists all devices using MX-11769 image intensifier tubes for which a page exists on this wiki.
| Manufacturer | Housing Type | |
|---|---|---|
| AN/PVS-14 | L3Harris Elbit Systems Of America Carson Industries Inc. | Monocular |
| Simrad GN-1 | Simrad | Bi-ocular |
