CDB5466U

DS676DB1

7

1.2.2.4

Selecting Frequency of E1 and E2

The pulse rate on E1 and E2 can be set to one of four frequency ranges. Input pins FREQ1 and FREQ0 determine

the maximum frequency on E1 and E2 for sine wave inputs with zero phase shift. The frequency of E2 is equal to

the frequency of E1 with active-low alternating pulses. Table 6 illustrates the options available.

The maximum frequency on the E1 and E2 output pins is determined by the position of the jumpers on J28, J29 and

J30, if the maximum peak differential signal applied to both channels is a sine wave with zero phase shift.

Maximum Frequency for a Sine Wave

Frequency Select

FREQ2

FREQ1

FREQ0

E1 or E2

E1+E2

FOUT

J28

J29

J30

0.125 Hz

0.25 Hz

64x(E1+E2)16 Hz

0.25 Hz

0.5 Hz

32x(E1+E2)16 Hz

0.5Hz

1.0 Hz

16x(E1+E2)16 Hz

1.0 Hz

2.0 Hz

2048x(E1+E2)

4,096 Hz

0.125 Hz

0.25 Hz

128x(E1+E2)32 Hz

0.25 Hz

0.5 Hz

64x(E1+E2)32 Hz

0.5 Hz

1.0 Hz

32x(E1+E2)32 Hz

1.0 Hz

2.0 Hz

16x(E1+E2)32 Hz

Table 6. Energy Output Frequency

O

O

VD+

FREQ2

GND

O

O

VD+

FREQ1

GND

O

O

VD+

FREQ0

GND

O

O

VD+

FREQ2

GND

O

O

VD+

FREQ1

GND

O

O

VD+

FREQ0

GND

O

O

VD+

FREQ2

GND

O

O

VD+

FREQ1

GND

O

O

VD+

FREQ0

GND

O

O

VD+

FREQ2

GND

(Default)

O

O

VD+

FREQ1

GND

(Default)

O

O

VD+

FREQ0

GND

(Default)

O

O

VD+

FREQ2

GND

O

O

VD+

FREQ1

GND

O

O

VD+

FREQ0

GND

O

O

VD+

FREQ2

GND

O

O

VD+

FREQ1

GND

O

O

VD+

FREQ0

GND

O

O

VD+

FREQ2

GND

O

O

VD+

FREQ1

GND

O

O

VD+

FREQ0

GND

O

O

VD+

FREQ2

GND

O

O

VD+

FREQ1

GND

O

O

VD+

FREQ0

GND