Lens1 DC (LC/MS)

The Lens1 DC voltage controls the voltage applied to Lens1. Lens 1 DC affects ions of all masses in a similar manner. An incorrect Lens1 DC setting will result in no, or greatly reduced, ion transmission.

Minimum

Maximum

Default

Typical

5.0

5.0

2.0

+2.0 (positive ions)

-2.0 (negative ions)

During manual tuning, the Lens1 DC voltage can be ramped to find an optimum value. Ramp defaults and limits are:

Default (volts)

Limits (volts)

Start (From)

-5

-5 to (Stop - Step)

Stop (to)

5

(Start + Step) to 5

Step Size (by)

0.1

0.1 to (Stop - Start)