| At line 29 added 1 line. |
| + LS340 Settings: |
| At line 30 added 7 lines. |
| + * Sensor A : 1K-pot |
| + * Sensor B : Sorb. (thats the cryo pump for the 3He) |
| + * Sensor C : 3He-pot Cernox for 1.2K<T<320K |
| + * Sensor D : 3He-pot Speer for T<10K |
| + * Sorb heater: 34 Ohm |
| + * 3He-pot heater: 200 Ohm |
| + |
| Line 33 was replaced by line 41 |
| - __Operation with two heaters:__ |
| + !Operation with two heaters: |
| At line 37 added 15 lines. |
| + The switch on the heater cable allows to operate the Sorb on loop 1 (the main loop) and simultaneously |
| + heat the 3He-pot with loop 2 and visa versa. |
| + |
| + For low Temperature experiments <10K it is recommended to use: Sorb = loop1, 3He = loop2 while for higher |
| + temperatures Sorb = loop2, 3He = loop1 should be used. ''note:'' for the high temperatur setting the Cernox (channel C) |
| + should be used as the primary thermometer |
| + |
| + You can operate the system by regulating the Sorb and the 3He-pot temperature independently (controlmode 0) |
| + or by using both heaters cooperatively to control the 3He-pot temperature (controlmode 1) in this case the setpoints |
| + for both loops should have the same value. |
| + |
| + __INPORTANT:__ both heaters are disabled if any setpoint is exactly zero. In order to control the Temperature using only |
| + 1 heater the other set value should be small (not reachable) |
| + |
| + |
| Line 40 was replaced by line 63 |
| - ''tt controlmode <n>'' ...sets control channel of loop 1 to B (n=1) or D (n=0) |
| + ''tt controlmode <n>'' ...sets control channel of loop 1 to B (n=0) or D (n=01) |
| Line 48 was replaced by line 71 |
| - (e.g. tt send cset 2:D,1,1 sets loop 2 to control the He-3 pot heater |
| + (e.g. tt send cset 2:D,1,1 sets loop 2 to control the 3He-pot heater |
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