For those of us just using the console, I assume the units should be deg/min - since you can't enter a negative value for decimal longitude?
Here's a novel idea: Why not just read the VP2 console manual (assuming it is a VP2, but analogously for a Vue)? It says eg for latitude:
1. Press the < and > keys to move between fields.
2. Press the + and - keys to change the settings up or down.
3. To select between SOUTH or NORTH, press 2ND and then UNITS.
The example given for lat is 37.6 North, so obviously using degrees to 1dp as the appropriate unit. And similarly for longitude.