Power Supply Module
The AD1603N Power Supply Module converts the input AC
power to the necessary DC voltages which are supplied to all
the modules in the AD1650B bay. The AD1603N PSM also
includes the Control Code circuitry which supplies code to the
remote Receivers and other Control Code accessories.
The system on/off switch and power pilot light are located on
the front of the Power Supply Module (see Figure 1-2, below).
Power Supply Module - Vertical Phase Adjustment
A vertical phase control is provided on the AD1603N Power
Supply Module for adjustment of the phase of the vertical
interval pulse with respect to the AC line. Proper adjustment
of this control provides roll-free video switching, provided that
all cameras are properly phased together. This control is set at
the factory for proper operation.
If field adjustment is required, this control is adjusted with the
AD1603N PSM plugged into the bay, the front panel of the
bay removed, and power applied to the bay. Insert a
screwdriver into the hole located on the top front of the PSM
(see Figure 1-2) and turn the control until roll-free switching is
obtained. (Video inputs must be line-locked and on the same
phase of the AC power source for roll-free vertical switching.)
Power Supply Module - Fuse replacement
The Power Supply Module contains four fuses for the input
AC power to the AD1603N and the output DC power from the
AD1603N to the AD1650B modules. The fuses may be
checked with the power switch turned OFF. These may be
replaced in the field by qualified personnel only.
The AC power line fuse, F1, is located in a screw-top fuse
holder near the line cord on the rear of the power supply case
(see Figure 1-2). If this fuse needs replacement, use the
following type fuse, according to the supply voltage:
AD1650B
(120VAC)
3/8A Slo Blo
ADE1650B, ADK1650B (230VAC)
3/16A T
In addition, three DC output power fuses are mounted on the
surface of the AD1603N PCB (see Figure 1-2). These may be
replaced with the following size fuses:
F2 (+18VDC) - 1A, 250V
F3 (+9VDC) -
2A, 250V
F4 (-18VDC) -
3/10A, 250V
AD1650B
SETUP
1-3
Figure 1-2 - AD1603N Power Supply Module PCB Layout
F2
F3
F4
F1
Power Cord
Power
Switch
Power
Indicator
Vertical Phase
Adjustment
Power Supply
