We got the shipped SHG housing today, assembled all the part, connected it to the thermal controller and started to do the thermal test. According to the spec of the thermal sensor, the corresponding resistance of 60 degree is 3.010 kOhm, 70 degree is 2.224. Since the current do have a linear relationship with the resistance based on the test we did to the higher resistance, finally we set the resistance to 2.6 kOhm to get the 65 degree we wanted. When it reached our goal temperature,the setting limited current is 0.5 A and the exact value is 0.464 A, this result is pretty different from what I did last time. Under this circumstance, I measured the temperature of the different parts with the spare thermal sensor, almost got the same value (24 degree) which are also quiet close to the room temperature. Then I cut down the heat source, after the crystal block back to the room temperature (about 23 degree), restart the process again and count the time. It took 6 min and 52 sec to reach the setting.