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operations:documentation.eremotecontrol_checklist_midob26 [2019/05/14 23:20] Warren Hankey |
operations:documentation.eremotecontrol_checklist_midob26 [2019/05/15 02:08] (current) Warren Hankey |
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<note important> * **check the receiver position with ''rxp''** Should be -256, +248, +18 (x,y,z). The values may be off by 2-3 mm which is the measurement noise. The 26m live page will have the receiver listed (left side)as "S/X" if all is well.</note> | <note important> * **check the receiver position with ''rxp''** Should be -256, +248, +18 (x,y,z). The values may be off by 2-3 mm which is the measurement noise. The 26m live page will have the receiver listed (left side)as "S/X" if all is well.</note> | ||
* **Cryogenics**. The command ''cryomon'' will return information on the S/X cryogenics. The lines to look out for are the ''pres'' and ''70k'' values... | * **Cryogenics**. The command ''cryomon'' will return information on the S/X cryogenics. The lines to look out for are the ''pres'' and ''70k'' values... | ||
- | * **Troubleshoot** If the cryomon or rxmon fs commands don't work (e.g. "rx - device timed out on response") try reset the TTY Distributor panel on the old MarkIV s/x rack, with the reset switch. The serial comms from the receiver to Hobart fs computer are patched through the TTY Distributor. Otherwise a power cycle of the receiver may be required. | + | * **Troubleshoot** If the cryomon or rxmon fs commands don't work (e.g. "rx - device timed out on response") try reset the TTY Distributor panel on the old MarkIV s/x rack, with the reset switch. The serial comms from the receiver to hobart fs computer are patched through the TTY Distributor. Otherwise a power cycle of the receiver may be required. |
* **Cryogenics: Vacuum pressure less than 3.5**. The Vacuum pressure in the S/X dewar should be below this value (measured in microns of Mercury). If it increases above this value, it indicates a leak. Let Brett know. e.g. this readout indicates a vacuum pressure of 1.227 <code>2014.126.09:00:46.53/rx/17(pres),on,a,on,on,on,off,locked,1.227</code> | * **Cryogenics: Vacuum pressure less than 3.5**. The Vacuum pressure in the S/X dewar should be below this value (measured in microns of Mercury). If it increases above this value, it indicates a leak. Let Brett know. e.g. this readout indicates a vacuum pressure of 1.227 <code>2014.126.09:00:46.53/rx/17(pres),on,a,on,on,on,off,locked,1.227</code> | ||
* **Cryogenics: 70K stage temperature below 65K**. The S/X dewar contains a 20K and a 70K stage. If the 70K stage temperature exceeds about 65K, this indicates the receiver is warming up and needs attention. Contact Brett. e.g. this readout indicates a 70K stage temperature of 167K (not good!) <code>2014.126.09:01:49.97/rx/1F(70k),on,a,on,on,on,off,locked,167.0</code> | * **Cryogenics: 70K stage temperature below 65K**. The S/X dewar contains a 20K and a 70K stage. If the 70K stage temperature exceeds about 65K, this indicates the receiver is warming up and needs attention. Contact Brett. e.g. this readout indicates a 70K stage temperature of 167K (not good!) <code>2014.126.09:01:49.97/rx/1F(70k),on,a,on,on,on,off,locked,167.0</code> |