TCS ALPHA REPLACEMENT for the JKT

In the WHT Computer Room

• Shut down LPAS3 using SHUT account from a LAT or telnet session; the SHUT account cannot be used from the Alpha's console. Take all default options.
• When LPAS3 is shut down (blue screen with >>> prompt), power it off and disconnect all cables.
• Check that the CAMAC driver PCI card is installed. This card should be directly below the monitor connection and has approx 140 pins. It is intended that a card will always be installed in LPAS3. If the card is not present install one, spare cards are currently kept in a drawer of the desk in the far right-hand corner of the WHT Computer room.
• Transport LPAS3's system box to the JKT. Be gentle. Too much vibration can cause boards/chips to come unseated. Place on top of LPAS1.

In the JKT Computer Room (on the Ground Floor ).

• A picture of lpas1 .
• Shut down LPAS1 using the SHUT account as above, if possible. Power off LPAS1.
• On the CAMAC system crate (directly below the Alpha), on the yellow Branch Coupler (BR CPR 4-1) switch from ON LINE to OFF. Pull the switch out 2mm to move it.
• Power off the CAMAC system crate.
• Disconnect the cables from LPAS1 and reconnect to LPAS3.
• Power on CAMAC system crate and wait for fans to run up.
• On the Branch Coupler (BR CPR 4-1), press the branch initialise switch, then switch from OFF to ON LINE.
• C and Z the HYTEC 1386 CAMAC Interface/Controller.
• Power on LPAS3, it will try to boot automatically from an external disk which will not be available. If the >>> prompt does not appear after any error messages, then press CTRL-P and wait for the >>> prompt to appear. (You may have to press CTRL-P more than once.) Then type boot dka100 and check that it boots VMS 7.1 .
• Wait for LPAS3 to boot (a login message will appear on the console when it has booted).

In the JKT Control Room

• Start the TCS as normal, remembering to log in to LPAS3.
• Check that UT and ST are updating in the TCS DISPLAY window, and check that the encoder values look sensible with the PAGE ENC command.
• On the ICS machine, shutdown the Unix observing system with shutdownobssys, this removes the DRAMA connection to LPAS1.
• Restart the observing system with startobssys, ignore error messages about failure to connect to TCS on LPAS1.
• Set up the connection to the TCS with the command online TCS@LPAS3 This makes the connection for this session only and must be repeated each time the observing system is started until the software group change the configuration (see below).
• Check that the Unix observing system communicates with the TCS, using the command tcs page to change the TCS info display page.
• Perform general checks on the TCS.

In case of problems see TCS help

Notes for software group

• On the JKT ICS sparc login as jktsm. Edit the file /jkt/etc/nodes.JKT and change the tcs_node to LPAS3. This will make the Unix observing system talk to the TCS on LPAS3 permanently.
• If there are problems with communication or header collection, login to LPAS3 as TCSMGR.
• For communication problems, check that the DRAMA port number is 50001 with the command type [JKT_LOGIN]IMP_STARTUP.LPAS3.
• If there are problems with header collection, check that the Unix ICS /jkt partition is mounted on LPAS3. Use the command SHOW DEV D and check that a disk with device name _DNFSn and volume label JKT is mounted. This partition is mounted at boot by SYS$SYSROOT:[SYSMGR]TCS_STARTUP.COM, also when the TCS starts up it will check and remount the partition if it is not mounted.
• To make previous CALIBRATE results available, restore reduced data files from LPAS1 directory [JKT.DATA.CALIBRATE]*.RED . Currently only the most recent are used. CFG may be able to restore from backup or mount disk from defunct lpas1.