Basler Electric MVC301 - Manual (Page 12)

3-6
Figure 3-4. Bench Test Connections.
(3) With the MANUAL VOLTAGE ADJUST control fully counter-clockwise (CCW)
apply a source of 120 Vac to Terminals 23 and 24 of the MVC-301. Slowly rotate
the MANUAL VOLTAGE ADJUST control clockwise (CW) and observe that the
brightness of the light bulb increases proportionally until it reaches full brightness.
(4) Rotate the MANUAL VOLTAGE ADJUST control fully counter-clockwise (CCW).
Remove the 120 Vac source from Terminals 23 and 24 and select 32 volt operation
by moving the jumper to Terminal 32. Apply the 120 Vac source to Terminals 23
and 24 of the MVC and observe that the brightness of the light bulb increases as
the MANUAL VOLTAGE ADJUST control is moved clockwise (CW). Notice that
the brightness of the bulb is approximately half of its previous brightness with the
jumper connected to this terminal.