10
globalspecialties.com
Global Specialties
Frontal Panel Description
In order to properly use the full capabilities of the PB-503A, it is highly recommended that the
user become familiar with the panel layout and the features of the components. See Figure 1.
A detailed panel layout and description of the PB-503A is given in the section “Components
and Features”.
The PB-503A can run off of 115 or 230 VAC. The unit comes standard with a 250 V / 1.5 A
type T fuse for the 115 VAC setting. In order to use with 230 VAC, please slide the switch in the
back to 230 VAC, and replace the fuse with a 250 V / 0.75 A type T fuse.
AC Line Input
Figure 1
- PB-503A - Front Panel Description
Ground
Binding
Posts
Logic
Indicators
AC Power Supply
Adjustment Variable
Positive / Negative
DC Power Supply
Binding Posts
Fixed Bus Strip,
connected to DC
Power Supplies
Power
Switch
Function
Generator
Debounced
Push Bottons
BNC
Connector
Speaker
Solderless
Breadboard
(2250 tie-points)
Model PB-3
BNC
Connector
SPDT Switches
10k 1k
Potentiometers
Logic Switches
