97-7224006_3-31-15
Information subject to change
23
7224 OPERATOR’S MANUAL – SECTION 4
2.
For High Current (90V) Output (see
Figure
4.12
).
3.
For High Voltage (180V) Output (see
Figure
4.13
).
4.3.4 Changing Bi-Level Power Supply
Function
The 7224 offers three Bi-Level switch settings:
Automatic, High, or Low. The user can select
between settings via a switch on the Power Supply
Board.
To access and change the Bi-Level Power Switch,
follow these steps:
1.
Locate the SIM Input Card on the right side of
the rear panel of the amplifier.
2.
Using a #2 Phillips screwdriver (provided),
remove the 2 screws located at the edges of
the SIM card.
3.
Keeping the ribbon cable attached, remove the
SIM card from the amplifier until it is completely
clear from the card bay.
4. Locate Bi-Level Power Switch, S1, a black,
three-position switch at the rear of the card
bay.(See
Figure 4.14
)
5.
Move Black switch to desired setting. If neces
-
sary, use a pointed, non-metallic object (such
as a pen) to help in moving the switch.
a.
Automatic – Left
b.
Low – Middle
c.
High – Right
4.3.5 Selecting the Best Voltage Poten-
tial and Bi-Level Power Switch Settings
for Your Application
The output of the amplifier will be determined by
the combination of settings used for both Voltage
Potential and Bi-Level Power Switch.
OUTPUT VOLTAGE
BI-LEVEL
SWITCH
SETTING
VOLTAGE POTENTIAL SETTING
High Current
(90V)
High Voltage
(180V)
AUTO
45 - 90
90 - 180
HIGH
90
180
LOW
45
90
Also see the
“Specifications”
section for more
information.
Figure 4.14 – Bi-Level Power Switch Location
