Simpson 650 - Page 13

OPERATING INSTRUCTIONS
NOTE
The ZERO ADJ. control is a combination
potentiometer and push-pull switch. In the
PUSH position, R14 is shorted. Refer to the
Overall Schematic Diagram, figure 6.
c. Connecting the Model 650 to the VOM.
1. Insert the top four plugs of the Model
650 into the lower four jacks of the Model 260/270.
2. Insert the short lead from the Model 650
into the 50 LAMPS jack.
3. Position the adapter locking latch,
underneath the instrument to secure the two units.
CAUTION
If your Model 260/270 case does not have
the locking provision, avoid applying exces-
sive pressure to the top of the Adapter when
connected to the Multimeter. A modification
kit which includes a new case with an adap-
ter locking provision is recommended for
optimum rigidity (see page 4 ).