Does Audio input CH1+CH2 BYPASS CH2 Manual/Auto switch and Menu settings?

So far I can't set one mic (e.g. Camera mount +48V) on input1 to CH1 and register a separate level on CH2.

When recording on a PD150 and other DVCam with a single mic and no mixer our SOP has been to record one channel (CH1) a few DB lower or set the other channel (CH2) to AUTO.

On the PD150 this was a menu setting + adjust audio level with the button/menu dial process. On the DVCam dip switches for front/rear input + man/auto and a level pot, plus a CH1 pot under the lens.

So far I can't figure out how to use one mic (e.g. Camera mount +48V) on input1 to CH1 and register a separate level on CH2.

With the REC CH SELECT toggled to CH1+CH2, the CH 2 pot is disabled.

The menu setting is also bypassed.

In the menu
AUDIO SET >XLR SET >AU MANUAL GAIN >SEPARATE

Even adding a -8/-16 db pad doesn't seem to affect CH2.

Am I misssing a setting?

Other a Y-Cable XLR Female to Two XLR Males any Suggestions?

Misread the post.

Is the input set for MIC or LINE? The trim only works when the input is set to MIC.

Edit:

On second read and after looking at the manual. You'll have to use a Y cable.

Chris