Global Specialties PB-505 - Manual - Manual (Page 12)

12
BNC CONNECTOR
The PB-505 may be connected to other pieces of equipment via a BNC connector. This
allows the use of shielded cable to minimize noise and interference.
SWITCHES
Two single pole, double throw (SPDT) switches are provided for general switching
functions. All leads are available and clearly marked on the PB-505 for easy connection.
Eight switches are configured as Logic Switches to provide a convenient source of
digital outputs. These switches will provide logic levels of zero volts (ground) for a logic
low, and logic high levels of either +5V or the voltage setting of the +1.3 to +15V supply.
The high level is determined by the setting of the +5/+V switch. This arrangement
makes connecting special digital circuitry such as an 8-bit input port quick and easy,
and allows compatibility with virtually any logic family.
Integrated circuits can be destroyed if a voltage is applied to their inputs that is
higher than the operating voltage of the IC's. Always insure that the setting of the
+5/ +V high-level switch is in the correct position before making connections to any
device.
CAUTION