97-8004167 07-14-17
Information subject to change
19
7224 & 7226 OPERATOR’S MANUAL –
SECTION 5
Figure 5.7 – Run Mode/Stop Mode
on Power-Up Setting
5.2.5 Run Mode/Stop Mode on
Power-Up Setting
The amplifier will power-up to
Run Mode
when
jumper
J11
is in the
Left
position (default setting).
To cause the amplifier to enter
Stop Mode
on
power-up, place jumper
J11
in the
Right
position.
See
Figure 5.7.
Figure 5.8 – Standby Mode on Over Load Setting
5.2.6 Standby on Overload Setting
When this latch is enabled, the amplifier will move
into Standby mode when it senses an activation of
the IOC (Input/Output Comparator) Distortion Alert
circuit. The IOC Distortion Alert circuit continuously
compares the input waveform to the output wave-
form. When a distortion of more than 0.5% occurs,
the IOC circuit will activate. The amplifier will re
-
main in Standby Mode until the Reset switch on the
front panel is pushed or a Reset signal is received
on the Interlock – I/O Connector. Once reset, the
amplifier will return to Run mode. To enable
Stand-
by mode on Over Load,
place the jumper across
the two pins labeled
J13.
See
Figure 5.8.
5.3
Configuration Settings Located on
the Power Supply Board
The following custom settings can be made via
plug-in connectors located on the Power Supply
Board:
•
Amplifier Voltage Potential setting (high current
or high voltage)
•
Bi-Level Power Supply setting
5.3.1 Accessing the Power Supply
Board
To access the Power Supply Board, follow the in-
structions given at the beginning of this Section to
open the Configuration Access Panel. The Power
Supply Board is located to the right of the Main
Board, as shown in
Figure 5.9.
5.3.2
Changing Amplifier Voltage
Potential
The amplifier can be configured for High Current
(90V) or High Voltage (180V) operation via user-
selectable plugs on the Power Supply Board.
Complete the following steps to change the ampli
-
fier voltage potential.
1.
Locate the two XFMR sections (left of Line
Voltage sections) (see
Figure 5.10
).
2.
For High Current (90V) Output (see
Figure
5.11
).
3.
For High Voltage (180V) Output (see
Figure
5.12
).
