SECTION 4
OPERATION
Pacific Power Source ©2013
4-16
Document # 126050-10 Rev E
4.3.3 FREQUENCY SELECT SWITCH AND VOLTS ADJUST
These switches also control the operation of the Power Source. The operator
must be fully familiar with these switches and their function prior to operating the
Power Source.
4.3.3.1 FREQUENCY SELECT SWITCH
The primary of the Frequency Select Switch is to control the internal Oscillator. It
also is used to determine whether the cabinet is a MASTER or SLAVE.
50, 60 and 400
These are fixed, crystal controlled frequencies for the
internal oscillator.
VAR
This is a 47 to 500 Hz variable frequency control for the
internal oscillator.
EXT
This selects an external oscillator input for the Power
Source.
SLAVE
In this position this cabinet is a SLAVE to another master in
a Multiple Cabinet System. One and only one cabinet may
be MASTER in a Multiple Cabinet System. The MASTER
Frequency shall control the entire Multiple Cabinet System.
4.3.3.2 VOLTAGE ADJUST CONTROLS
The Voltage Adjust Controls control the internal Oscillator output voltage. The
center control is for all three output phases. ØB and ØC are for Phase B and
Phase C trim adjustments only. These controls only work if the cabinet is a
master and the internal oscillator is selected.
FIGURE 4.3.3
FREQUENCY SELECT AND VOLTS ADJUST