Step 3. Set Up The Probe For The Clock Source - HP 64767 User Manual

Chapter 2: Plugging into a Target System

Step 3. Set up the probe for the clock source

Step 3. Set up the probe for the clock source
A 14-pin DIP socket located at the target connector end of the probe is used to
prepare the emulator probe for the type of clock source in the target system. The
figure below shows the connections that are made to the socket.
A jumper that connects the emulation processor OSCOUT and CLKIN pins to the
OSCOUT and CLKIN pins on the target connector is provided. You can use this
jumper if:
•
•
However, if the target system has a high frequency crystal connected between the
OSCOUT and CLKIN pins, you may have to replace the jumper with either a
standard 14-pin oscillator of the desired frequency or a prototyping socket on which
a crystal and any capacitors or tank circuitry are assembled. (One such prototyping
socket is part number 20314-36-455 from Electronic Molding Corp., 96 Mill Street,
Woonsocket RI.)
50
The target system drives CLKIN with an oscillator.
The target system has a low frequency crystal connected between the
OSCOUT and CLKIN pins.