O P E R A T I O N
Power-Up Sequence
Power-Up Sequence
With the LDT-5525 Series Precision Temperature Controller connected to an AC power source, pressing the POWER switch will supply power to the instrument and start the power up sequence.
During the power-up sequence, the following takes place. For about two seconds all indicators light up, and all of the 7-segment displays indicate "8". Then all lamps are turned off for two seconds. Then, the sensor switch position is displayed for two seconds. After this, the unit is configured to the state it was in when the power was last shut off (except for the display mode which defaults to I TE measurement). The adjust knob is always disabled at power up.
Introduction to the LDT-5525 Front Panel
The LDT-5525 Temperature Controller's front panel contains displays and controls for the Temperature Controller hardware. Each of the labeled areas on the front panel (i.e. DISPLAY or MODE) is described in this chapter.
Refer to Figure 2.1 for the following discussions of the LDT-5525 Temperature Controller front panel sections. The key words are in capital letters for quick identification.
Error | Parameter | Display | Adjust | Adjust |
Indicators | Switch | | Switch | Enable | Knob |
| | | Switch | | |
| LDT-5525 | TEMPERATURE CONTROLLER | | |
DISPLAY 
ADJUST
ITE
SENSOR VIEW SET
PARAMETER
| | ILIMIT | ENBL |
SENSOR OPEN | TE OPEN | T LIMIT | |
| | GAIN | |
| ANALOG OUT | SENSOR CAL | MODE | OUTPUT |
| POWER | C1 | I TE | |
| 100 C/V | |
| C2 | R | ON |
| 10 k Ω/ V |
| | T | |
100kΩ/ V
AC POWER | Analog | CAL | Mode | Output |
ON/Off | Output | Select | Select | On/Off |
Switch | Connector | Switch | Switch | Switch |
Figure 2.1 LDT-5525 Front Panel
8 LDT-5525
