http://cso.caltech.edu/wiki/ 2026-09-16T00:36:34+00:00 http://cso.caltech.edu/wiki/ http://cso.caltech.edu/wiki/lib/tpl/cso/images/favicon.ico text/html 2013-10-31T21:10:03+00:00 http://cso.caltech.edu/wiki/cso/instruments/heterodyne/tuning/barney?rev=1383253803&do=diff Barney The wideband 345 GHz receiver (Barney) has a 4 GHz bandwidth (4-8 GHz IF). It is mounted on request at the Cassegrain focus, usually on the left side. Setup Always wear a grounding wrist strap while adjusting the receiver. * Remove the mirror covers from the relay optics. text/html 2013-10-31T07:23:25+00:00 http://cso.caltech.edu/wiki/cso/instruments/heterodyne/tuning/sidecab?rev=1383204205&do=diff Receiver tuning The narrow band 345 GHz and 650 GHz receivers in the sidecab and the 850 GHz receiver are tuned manually. Always wear an antistatic wrist strap with a grounding wire when you touch receiver components. General procedure * Select the line you wish to observe with the text/html 2012-11-21T21:36:40+00:00 http://cso.caltech.edu/wiki/cso/instruments/heterodyne/tuning/zrex?rev=1353533800&do=diff Zrex tuning Zrex has been decommissioned. These notes are only of historical interest, at best. Instruction for using 4GHz AOS and wideband receivers can be found here. Instructions to set up the 230GHz wideband receiver is found here summarized by Richard. Instruction to setup the sidecab PLL for the 345