B&K Precision 1762 - Manual - Manual (Page 29)

29
OPERATING INSTRUCTIONS
9. Observe proper polarity. If the circuit being powered is not
equipped with reverse polarity protection, damage to the circuit
can result from reverse polarity. Use color coded hook-up leads,
for convenience in identifying polarity, red for (+) and black for
(-).
10. Make sure that the hook-up leads offer sufficient current
capability and low resistance between the power supply and the
circuits being powered. 10-amp test leads are available as an
optional accessory.
4-6.5 V POWER SUPPLY OPERATION
The 4-6.5V supply provides a 4.0 to 6.5V DC output with a 5 amp
current capacity. The supply is ideal for use with TTL circuits.
5. Set the 0-30V/4-6.5V switch to the 4-6.5V position and the Right
V/A switch to the V position. This sets the “A”/4-6.5V Display
to show output voltage of the 4-6.5V supply.
6. Using the Voltage Level Control to adjust the output voltage of
the 4-6.5 V supply to the desired level.
7. Turn off the power supply and the equipment to be powered
during hook-up.
8. Connect the positive polarity of the device being powered to the
red (+) terminal of the 4-6.5V supply.
9. Connect the negative polarity of the device being powered to the
black (-) terminal of the 4-6.5V supply.
1. Fig. 10 illustrates the grounding possibilities of the 4-6.5V
supply.
a. If the negative polarity of the equipment or circuit being
powered is also the chassis or common, it may grounded to
earth by connecting a jumper from the black (-) terminal to
either green ( ) terminal as shown in Fig. 10A.
b. Similarly, the positive polarity can be grounded by
connecting a jumper between the red (+) terminal and either
green ( ) terminal as shown in Fig. 10B.
c. If an earth ground reference is not required, the
configuration of Fig. 10C may be used. The scheme in Fig.
10C should also be used where it is not known whether the
chassis is common with either the positive or negative
polarity.
d. If the chassis or common of the equipment being powered is
separate from both the positive and negative polarity power
inputs, use the connection shown in Fig. 10D.
2. Observe proper polarity. If the circuit being powered is not
equipped with reverse polarity protection, damage to the circuit
can result from reverse polarity. Use color coded hook-up
leads, for convenience in identifying polarity, red for (+) and
black for (-).
3. Make sure that the hook-up leads offer sufficient current
capability and low resistance between the power supply and the
circuits being powered. 10-amp hook-up leads are available as
an optional accessory.
4. Set the Right V/A switch to the A position to monitor the load
current.