User`s manual

Lake Shore MTD Series Cryotest System User’s Manual
6-2 Options, Accessories, & Cables
ACCESSORIES (CONTINUED)
MODEL DESCRIPTION OF ACCESSORY
1025
Breakout Box with 100 BNC Connectors. Often there is a need to perform simple electrical tests
on individual elements of the DUT that are not as accessible in automated testing due to the
random nature of the test requirements. Breakout boxes provide the means to accomplish this.
Breakout boxes are comprised of a set of floating BNC connectors, one for each signal line.
Coaxial ribbon cable is used to connect these signal line to the four 25-line feedthrus on the
vacuum chamber base plate. The BNC connectors are arranged in four quadrants, each
corresponding to the contacts on one side of the device package. The box makes provision for a
schematic representation of the device package to simplify cross-matching of connector locations.
Dimensions for the Model 1025 are 12 inches long by 12 inches wide by 4 inches high.
1026
Breakout Box with 100 Triax Connectors. Same as Model 1025 but with Triax connectors.
1035
Breakout Module with 25 BNC Connectors. Breakout modules are similar in function to the
1025/1026 Breakout Boxes except that they attach directly to the MTD System and contain only 25
coax BNC connectors; which correspond to one side (or quadrant) of the device package. The
1035 mounts directly to the multiple line feedthrus on the base plate of the vacuum chamber. This
configuration eliminates the need for an interconnecting cable, reducing potential noise pickup and
parasitic capacitance. These modules can also house a variety of electronics, buffer amplifiers,
transimpedance amplifiers, and drive electronics.
1036
Breakout Module with 25 Triax Connectors. Same as Model 1035 but with Triax connectors.
1045
Breakout Module with BNC Connectors. Same as Model 1035 but with 17 floating BNC
connectors and the appropriate multi-pin mating connector for use with the Model MTD-158.
1046
Breakout Module with Triaxial Connectors. Same as Model 1045 but with 17 floating triaxial
connectors and the appropriate multi-pin mating connector for use with the Model MTD-158.
1205
Liquid Helium/Liquid Nitrogen Transfer Line. This conventional, flexible vacuum-insulated line
consists of a long, rigid withdrawal tube that can be inserted into a liquid helium storage vessel or
modified liquid nitrogen container. It can also be used to operate the MTD System in a continuous
flow mode. The withdrawal tube contains a filter to prevent foreign matter from plugging the small
diameter inner tube, and an integral valve assembly for control of the cryogen flow rate. The other
end of the transfer line is terminated in a bayonet fitting which is easily mated to the MTD-100
liquid transfer cooling unit. The transfer line vacuum space is fitted with a vacuum pumpout valve
and safety pressure relief valve.
1210
Liquid Nitrogen Transfer Line. Flexible vacuum-insulated line for transferring LN
2
from a
pressurized storage dewar to an MTD System. It can also be used to operate the MTD System in a
continuous flow mode. Consists of a 1 meter (3 foot) long withdrawal tube that can be inserted into
a modified liquid nitrogen container. The withdrawal tube incorporates filter to prevent foreign
matter from plugging the small diameter inner tube and an insulated valve assembly for control of
cryogen flow. The other end of the transfer line is terminated in a bayonet fitting which is easily
mated to the MTD-100 liquid transfer cooling unit.
1215
Liquid Nitrogen Precooling Transfer Line. Flexible stainless steel transfer line used to quickly
and economically precool an MTD System to ≈80 K with LN
2
before cooling the system to 5 K with
more costly LHe.