B&K Precision 1688B - Manual - Manual (Page 14)

12
Front Panel Display Test
Overtemperature
protection check
Fan check
Output off (remote
control mode)
Table 2 - Self Test Sequence
The LED and other indicators on the front panel will be turned on. When the cooling
fan is being checked, a loud fan noise can be heard.
After the self checks, the CV, V, and A LED indicators are lit up displaying voltage and
0.0 current. To find out about the set CC current level, just turn the current control
knob one click in either direction. The current display returns to 0.0 after a few
seconds.
4.1.3 Control Knobs
The rotary encoder control knobs have fine and coarse tuning with clicking
movement.
Push the knobs to toggle between coarse and fine tuning. You will notice the subtle
change in brightness of LED.
Adjust the knobs to your desired values through coarse and fine tuning. The display
will resume its normal brightness after a few seconds to confirm your adjustment.