Directed Electronics PDG-2515/2520

PDG-2515/2520 Operating Manual

Page 31 MNPDG2515-2520R0.doc

The PULSE CT variable for each channel can be set to any value between

1 and 65,535. In setting the PULSE CT, the x10 button will increase this

number by a factor of ten and the encoder wheel will increase/decrease

the number of pulses incrementally by one. For example, to set the count

to 1,500, first set the count to 15 using the encoder wheel, then press the

X10 button two times. The first press will increment the count to 150, and

the second to 1,500.

Pressing the OUTPUT button enables the output pulse series. The Pulse

On LED will illuminate until the pulse series is completed, at which time

the LED will extinguish. Each time the PULSE ON button is pressed, the

output pulse series will be generated.

In Internal PRF mode, the frequency (repetition rate) of the pulses are

determined by the internal frequency generator. If externally triggered, the

frequency of the pulses is determined by the frequency of the input trigger.

The delay of each of the outputs is relative to the leading edge of the T0

SYNC output.

Figure 13 Example: Pulse Count Mode

Divide By N Mode

In Divide by N Mode, OUT1 and OUT3 generates continuous output

pulses (as in Pulse Generator Mode), and OUT2 and OUT4 generates an

output pulse every “Nth” Output pulse. The divisor is set through the Div

Out1 By variable in the FREQ DIV in the CHANNEL2 menu. The X10

button will multiply this number by a factor of 10.