Figure 2-3 illustrates the necessary power connections for 3.3V VCC-to-VEE operation.

• With supply 1 disabled, program supply 1V to 3.3V with 500mA current limit
• With supply 2 disabled, program supply 2V to 2V with 500mA current limit

Figure 2-3 Power Supply Connections

1. Connect supplies and board with banana cables as shown. This configuration is for nominal 3.3V testing. To configure other VCC-to-VEE voltages, program supply 1 to the proper range of 2.375V to 3.8V. Supply 2 remains fixed with 2V offset from VCC to earth ground termination.
2. With the signal generator disabled, program according to Table 2-2 based on the supply voltage used. Note, that the amplitudes and offsets are based on a single-ended signal.
   Table 2-2 Power Supply Configuration

   Voltage	VCC:VEE	VCC-GND	CLK[0:1] amplitude	CLK[0:1] offset
   MIN	2.375V	2V	500mV	0.625V
   TYP	3.3V	2V	500mV	–0.3 V
   MAX	3.8V	2V	500mV	–0.8 V

3. This configuration provides a 1V peak-to-peak differential clock with appropriate offset relative to earth ground (LVPECL termination point).
4. Connect 1 or more output pairs to a 50Ω terminated oscilloscope.
5. Connect signal generator to CLK0 and nCLK0.
6. Verify that JP3 is open or set between pins 2 and 3. This enables CLK0. Jumper pins 1 and 2 are shorted to select CLK1.
   1. There is an error with the silkscreen, JP3 'H' side is a resistor to VEE or GND.
7. Enable power supply 1 and 2.
8. Enable signal generator outputs.
9. View outputs on oscilloscope screen.