• Installation from dome floor storage to telescope.
• Operational test procedure.
• Removal from telescope to dome floor storage.
• Restarting the temperature monitor.
• Programming the autofill timer.

Installation procedure

1. Mechanical
   1. Set telescope to zenith position.
   2. The IRCAM dewar, power supply, and array electronics are stored on a cart parked under the south secondary access platform. It is supplied power and an RS232 line from the computer room in order to continuously monitor the dewar temperature.
      Turn off main power on the plug strip. Unplug the strip from the orange extension cord and disconnect the temperature monitor DB-25 connection.
   3. With a 11/16" open end or crescent wrench, disconnect the 160-l LN2 dewar supply line at the flare fitting on the IRCAM dewar base ring.
   4. Unplug the LN2 supply line solenoid valve 3-prong power cord from the black and white control box mounted on-board the IRCAM power supply (image).
   5. Wheel the cart over under the telescope, with the IRCAM power supply and motor control box to the N (and blue array electronics to the S), and position it such that the IRCAM mounting ring and the power supply mount holes line up with the appropriate bolt hole circles.
   6. Run the floor lift and install and tighten bolts on the dewar and power supply per standard mechanical procedures.
   7. Set telescope balance: AB = 25, CD = 58, DEC slide = 24 in.
   8. After IRCAM has been fully connected and tested, set the telescope to home and bring the 160-l LN2 dewar to a position NE of IRCAM. Reconnect the supply line and plug in the solenoid valve power to its control box. Check the timer display for current time; if the timer has been reset, it must be reprogrammed.
2. Electrical connections on telescope patch panel:
   1. Connect IRCAM Main Power (plug strip) to telescope Unswitched power strip.
   2. Connect Motor Control DB-25(M) to T 25-01.
   3. Connect Temperature Monitor DB-25(M) to T 25-04.
   4. Connect 4 coaxial cables C, D, L, M from blue array electronics box to panel coax 1, 2, 3, 4 . You can also connect the DB-37 connector to the patch panel but it is not used.
   5. Turn on main power (plug strip). Turn on array electronics power (protected switch on lower end of power supply box). Check to see that motor power switch is toggled on and that the red Lakeshore display updates to a good value (around 80 K).
3. Computer room connections:
   1. USNO gun-metal square box:
      • Connect 4 coaxial connectors from room patch panel 1, 2, 3, 4 to rear box panel C, D, L, X ( note X, not M ).
      • Ribbon cables JA1 and JA2 connect from PC to labeled clamp-style 50(?)-pin connectors.
      • Switch front panel toggle to IR.
      • Turn on front panel power switch.
   2. PC:
      • Connect DB-25(M) Instrument Control from ICP T 25-01 to DB25 port 1 (top).
      • Connect terminal extender and mouse lines to appropriate ports.
      • Connect yellow terminated coaxial network cable to network card.
   3. Other:
      • Connect DB-25(M) Temperature Monitor from ICP T 25-04 to extender panel on Sun mesa. This cable is tied to the one that comes from the dome floor temperature monitor serial line.
      • Connect serial line DB-9 (MOVE computer) to Sun perkins DB-25 serial port.

Operational test procedure

1. Log in to perkins as obs72.
2. Type start.lois in the console or any window.
3. Type source setup.tcl in the LOIS console window.
4. Type ircam_setup in the LOIS console window.
   The exposure control, telescope interface, and filter wheel control windows should appear.
5. Take a test bias frame.
   • If the resulting image is cross-hatched or otherwise not normal, increase the exposure time to 3s, select image type object, and take another test image.
   • If the image is still bad, turn off power to the USNO gun-metal box, then cycle power to the IRCAM array electronics, then turn back on USNO box. Take another image. It should appear as a white-noise bias frame. If not, contact Brian Taylor or Tom Bida.
6. In the filter wheel control window, select Calibrate. The wheel status should update to Home in less than 1 minute.
7. Temperature monitor:
   1. rlogin to mesa.
   2. Find daemon lakeshore PID by typing ps -ef | grep lakeshore
      then kill -9 PID
   3. Restart the daemon by typing ~/LakeShore/lakeshore
   4. Check to see that the monitor is working by selecting the pulldown menu entry Instruments -> IRCAM Temperature Monitor. This starts an active tail of the file /var/local_logs/ircam_temp.log. If the monitor is working an update of the temperature should appear in the last line.