NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Astronomy . ... Visitor Center . ... Specifications . ... Power Supply . ... Center Frequency: 420 MHz (adjustable from 425 to 435 MHz) . ... Maximum instantaneous bandwidth: 2 MHz . Maximum Peak Power at transmitter output: 2.5 kW . Maximum Avg. Power at transmitter output: 150 kW . ... Power output variation: less than 0.2 dB pulse to pulse after 15 minutes warm up . ... Output power adjustability: continuously adjustable to ~20 dB . ...

Next: MARK5 and EVLBI Up: Recording Systems. ... These are specified in the SCHED station catalog with the paramters CONTROL , DAR , RECORDER and DISK . The first element is the control system -- what software (and hardware) is used to control the recording system. The options that SCHED can handle for wide band VLBI observations are VLBA and VEX. ... The new control system will initially just control the new data aquisition system and recorder. ...

... Driver ID: LOCAL . This is a hack to allow a machine to use its own system clock as a reference clock, i.e., to free-run using no outside clock discipline source. ... Another application for this driver is if a particular server clock is to be used as the clock of last resort when all other normal synchronization sources have gone away. ... This driver provides a mechanism to trim the local clock in both time and frequency, as well as a way to manipulate the leap bits. ... Not used by this driver. ...

... These interface control documents were prepared in October 2009 for a Request For Proposals (RFP) which was never issued. MRO-ICD-AMO-0000-022 MROI to UTM ICD . ... MRO-ICD-EIE-0032 UTE to FTT ICD . ... The top-level diagram indicates ICDs with other MROI components/systems. The detailed diagram also indicates interfaces within the FTT/NAS workpackage. ... MRO-ICD-CAM-1200-0113) . ... Printable View of http://www.mrao.cam.ac.uk/projects/OAS/pmwiki/pmwiki.php/MROIFastTipTilt/InterfaceControl) ...

XPA supports host-based access control for each XPA access point. You can enable/disable access control using the XPA_ACL environment variable. ... See XPA Access Points and Templates for more information about xpa templates. ... For example: xpaset -p xpa1 -acl "somehost -" will turn off all access control for somehost to the xpa1 access point, while: xpaset -p XPA:xpa1 -acl "beberly gs" will give beberly xpaget and xpaset access to the access point whose class is XPA and whose name is xpa1. ...

The File System . ... Files are identified to the system using a unique identifier called the file specification , which can include disk and directory names as well as node names for accessing files across the network. On VMS systems, file names are usually thought of as having three parts *1 : the filename , the file type , and the version number . ... The full file specification, with node name, device, directory, file name, file type, and version being specified is shown in Figure 3.1 . ...

Instructions for using Menu-driven Axis Control Software . ... Altitude and azimuth axes use position feedback and the setting is in counts per second times 10. ... Use b to set the brakes and use c to clear the brakes for the corresponding axis, either azimuth or altitude. ... Use m to move to the previously specified position and velocity for the corresponding axis; either azimuth or altitude. ... Use g to move to the previously specified position and velocity for both the azimuth and altitude axis. ...

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