TELESCOPE OPERATIONS

PULSAR OBSERVING WITH THE BCPM

The following are basic procedures used in relation to pulsar observations using the BCPM.

Additional specific settings will be required depending on the observers desires. The following guide shows the basic tasks that may be required.

STEP	ACTION
1	From an xterm window: ssh ^ sadira Logs in secure to this workstation. You can login to a different workstation if directed.
2	From the same window: ssh ^ -l ^ bcpm2 ^ bcpm2 Logs in to BCPM and brings up task selection menu. From the menu, select the u option (user interface). When prompted for a login name, press enter (default option). The following windows will launch: Status Display, Command Line Interface, Graphical User Interface, Level Monitor

BCPM Command Line Interface Window Commands

COMMAND	ACTION
setpower	Runs a script on the BCPM to set the power levels in the channels.
timing	Used to set up the BCPM in timing mode and start acquiring data.
monitor	Sets up the BCPM (for search and voltage sampling modes) and acquires data without saving it to disk or tape.
takedata	Used in search and voltage sampling modes to commence taking a stretch of search data to disk or tape.
abort	Stops the BCPM without saving the last data sample to disk or tape.
stop	Stops the BCPM and saves the last data sample to disk or tape.

STEP	ACTION
NOTE	The config tool has replaced this configuration application and the older setup scripts, though they may be desired by some observers. Do not run unless requested.
1	To start the BCPM GO Panel, from an xterm window enter: PSRGUI (launches the application)
2	To run a setup script, from an xterm window enter: cd ^ include (changes to the include directory); then enter: glish ^ -l ^ xxxx.g (substitute the "xxxx" with the applicable script name); Select the option number corresponding to the desired receiver; Select the BCPM (option 1); Enter r (run option). The BCPM should now be ready.

LO
- Confirm: LO set for correct signal path to receiver
- Confirm: Correct rest frequency

IF Rack
- Confirm: Correct signal path setup for receiver
- Balance: IR rack
- Check RF power: 1v is optimal

Converter Rack
- Confirm: Routing to correct Converter Module (Rack A CM4 & 8)
- Confirm: Correct LO2 frequency
- Check RF power: Values normally well below 1v

-- DavidRose - 6 Feb 2008

Topic PulsarObservingWithTheBCPM . { Edit | Attach | Ref-By | Printable | Diffs | r1.8 | > | r1.7 | > | r1.6 | More }

Revision r1.8 - 06 Feb 2008 - 16:52 GMT - DavidRose Parents: WebHome > TelescopeOperations	Content copyright © 1999-2007 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.


NRAO Home > Green Bank \| Wiki Topic: GB > Operate > TelescopeOperations > PulsarObservingWithTheBCPM

Changes \| Index \| Contents \| Search \| Go