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Directed Electronics PDG-2515/2520 manual

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  • Page 1

    THE PULSE OF THE F U TURE DIRECTED ENERGY, INC. PDG-2515/2520 Digital Delay and Pulse Generator OPERATING MANUAL www.directedenergy.com[...]

  • Page 2

    THE PULSE OF THE F U TURE[...]

  • Page 3

    PDG-2515/2520 Operating Manual Page i MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. T able of Content s Table of C ontents................................................................................................... i List of Figures ...................................................................................................... iv[...]

  • Page 4

    PDG-2515/2520 Operating Manual Page ii MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Operating Tips ................................................................................................... 8 Power-Up Pr ocedures ....................................................................................... 9 FRONT PANEL OPERATIN G INSTRUCT [...]

  • Page 5

    PDG-2515/2520 Operating Manual Page iii MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Cover Remo val ............................................................................................ 24 General Operati ng Precaut ions ................................................................... 24 Servicing Safety Summary ....................[...]

  • Page 6

    PDG-2515/2520 Operating Manual Page iv MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. List of Figures Figure 1 Logic & Polarity Functional Diagram ..................................................... 11 Figure 2 Timi ng Diagr am .................................................................................... 12 Figure 3 Example 1: Pu l[...]

  • Page 7

    PDG-2515/2520 Operating Manual Page v MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Safety W arning SAFE OPERATING PROCEDURES AND PROPER USE OF THE EQUIPMENT ARE THE RESPONSIBILITY OF THE USER OF THIS SYSTEM. Directed Energy, Inc. (DEI) provides information on its products and associated hazards, but it assumes no responsibility for the after [...]

  • Page 8

    PDG-2515/2520 Operating Manual Page 1 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. PDG-2515 Operating Manual Quick S tart Guide This quick-start guide provides a step-by -step guide to manually operating the PDG-2515. Please refer to the appropriate sections of the manual for additional instructions and guidelines. The SAFETY wa rnings in the[...]

  • Page 9

    PDG-2515/2520 Operating Manual Page 2 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Output Button The output button enables/disables the pulse output. Menu Button This button is for navigating the PDG-2515 menus. Enter Button Used for variables that will be permanent ly stored in the unit or require setup times internal to the PDG-2515. When a[...]

  • Page 10

    PDG-2515/2520 Operating Manual Page 3 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. X10 button once to increment it to 250ns, then rotate the encoder wheel to increase it to 300ns. At this point, pressing the X10 button again would increase the delay to 3.00us, pressing it again increments it to 30.0us, etc. An additional function is that if i[...]

  • Page 11

    PDG-2515/2520 Operating Manual Page 4 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. The PDG-2515 accepts input volt ages of 90-264VAC, 47-63Hz. Example Setup The default setup is 1 kHz, with zero delay and 100 us pulse on both channels. The pulse in not inverted and the pulse mode is in continuous pulse generation mode which means that pulse c[...]

  • Page 12

    PDG-2515/2520 Operating Manual Page 5 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Product Overview Description The PDG-2515 is a two channel digital delay/pulse generator. Each channel offers independently adjustable delay and width, with 25 nanosecond resolution. Up to five user configurations may be st ored in internal non- volatile memory[...]

  • Page 13

    PDG-2515/2520 Operating Manual Page 6 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Specifications PA RAME TER V alu e OUTPUTS Output Channels Two (2) outputs, each wi th independent di gi tally c ontrolled delay and pulse width Delay Range 0 to 99.9 Seconds Pulse Width Range 25 Nanoseconds to 99.9 Sec onds Delay And Pulse W idth Reso lution 2[...]

  • Page 14

    PDG-2515/2520 Operating Manual Page 7 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Applications The versatile functionality of the PDG- 2515 makes it ideal for the needs of numerous applications as a small bench top instrument. The delay resolution and width resolution of each channel allow a uni que ability to offset control signals, coupled[...]

  • Page 15

    PDG-2515/2520 Operating Manual Page 8 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. equipment when making connections in high voltage or high current circuits. Discharge high voltage c apacitors after removing power. Servicing Safety Summary DEI strongly recommends that all repai rs and adjustments be performed by factory qualified personnel. [...]

  • Page 16

    PDG-2515/2520 Operating Manual Page 9 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. change is accomplished by using t he encoder while holding the 10X button down. Power-Up Procedures The unit should be powered up us ing the following procedures: Connect OUT 1 and/or OUT 2 to an appropriate load us ing 50 Ohm coaxial cable (See Section 6.0). P[...]

  • Page 17

    PDG-2515/2520 Operating Manual Page 10 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. the contrast settings of the unit. The operating modes will be discussed in more detail in section 9.0. Enabl ing and disabling a channel can also happen on the fly in pulse generation and Divide By N modes. In pulse count mode this needs to be set before hand[...]

  • Page 18

    PDG-2515/2520 Operating Manual Page 11 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Figure 1 Logic & Polarity Functional Diagram THE CONFIGS MENU The CONFIGS MENU allows the user to save or load up to 5 different configurations. After selecting the appr opriate configuration to either load or save (1 through 5) hit the ENTE R button and t[...]

  • Page 19

    PDG-2515/2520 Operating Manual Page 12 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Figure 2 Timing Diagram Please note that in external trigger mode, all outputs are delayed from the leading edge of the exte rnal trigger signal. Pulse Generator Mode In Pulse Generator Mode, the PDG-2515 generates pulses at the specified frequency denoted in [...]

  • Page 20

    PDG-2515/2520 Operating Manual Page 13 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Figure 3 Example 1: Pulse Generator Mode Figure 4 Example 2: Pulse Generator Mode Pulse Count Mode In Pulse Count Mode, the PDG-2515 generates a series of pulses, the number of which is set by the PULSE CT variables on the respective channel menu. When the num[...]

  • Page 21

    PDG-2515/2520 Operating Manual Page 14 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. The PULSE CT variable for each channel c an 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. [...]

  • Page 22

    PDG-2515/2520 Operating Manual Page 15 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Be aware that coming out of this mode, if any variables are out of range by going into a mode that conflicts wit h these settings, the channel/channels will be set back to the default values. Figure 6 Example 1: Divide by N Mode Figure 7 Example 2: Divide by N[...]

  • Page 23

    PDG-2515/2520 Operating Manual Page 16 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. frequency at a limited duty cycle and cutoff any length of burst after that length of time). The software will not check to check timing constraints in this mode, meaning that if the timing if violated, the output may be erroneous and not predictable (only whi[...]

  • Page 24

    PDG-2515/2520 Operating Manual Page 17 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. T roubleshooting Guide No power LED or screen does not come up. Check power source, power switch (located on rear of unit). Pulse exhibits excessive ringing. Check load impedance. Frequency limits. Check duty cycle of EACH channel, both channels must be within[...]

  • Page 25

    PDG-2515/2520 Operating Manual Page 18 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. PDG-2520 Operating Manual Quick S tart Guide This quick-start guide provides a step-by -step guide to manually operating the PDG-2520. Please refer to the appropriate sections of the manual for additional instructions and guidelines. The SAFETY wa rnings in th[...]

  • Page 26

    PDG-2515/2520 Operating Manual Page 19 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Output Button The output button enables/disables the pulse output. Menu Button This button is for navigating the PDG-2520 menus. Enter Button Used for variables that will be permanent ly stored in the unit or require setup times internal to the PDG-2520. When [...]

  • Page 27

    PDG-2515/2520 Operating Manual Page 20 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. X10 button once to increment it to 250ns, then rotate the encoder wheel to increase it to 300ns. At this point, pressing the X10 button again would increase the delay to 3.00us, pressing it again increments it to 30.0us, etc. An additional function is that if [...]

  • Page 28

    PDG-2515/2520 Operating Manual Page 21 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. The PDG-2520 accepts input volt ages of 90-264VAC, 47-63Hz. Example Setup The default setup is 1 kHz, with zero delay and 100 us pulse on both channels. The pulse in not inverted and the pulse mode is in continuous pulse generation mode which means that pulse [...]

  • Page 29

    PDG-2515/2520 Operating Manual Page 22 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Product Overview Description The PDG-2520 is a four channel digital delay/pulse generator. Each channel offers independently adjustable delay and width, with 25 nanosecond resolution. Up to five user configurations may be st ored in internal non- volatile memo[...]

  • Page 30

    PDG-2515/2520 Operating Manual Page 23 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Specifications PA RAME TER V alu e OUTPUTS Output Channels Four (4) outputs, each wi th independent di gi tally controlled dela y and pulse width Delay Range 0 to 99.9 Seconds Pulse Width Range 25 Nanoseconds to 99.9 Sec onds Delay And Pulse W idth Reso lution[...]

  • Page 31

    PDG-2515/2520 Operating Manual Page 24 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Applications The versatile functionality of the PDG- 2520 makes it ideal for the needs of numerous applications as a small bench top instrument. The delay resolution and width resolution of each channel allow a unique ability to offset control signals, coupled[...]

  • Page 32

    PDG-2515/2520 Operating Manual Page 25 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. equipment when making connections in high voltage or high current circuits. Discharge high voltage c apacitors after removing power. Servicing Safety Summary DEI strongly recommends that all repai rs and adjustments be performed by factory qualified personnel.[...]

  • Page 33

    PDG-2515/2520 Operating Manual Page 26 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. change is accomplished by using t he encoder while holding the 10X button down. Power-Up Procedures The unit should be powered up us ing the following procedures: Connect OUTPUTs to an appropriate load using 50 Ohm coaxial cable (See Section 6.0). Plug the AC [...]

  • Page 34

    PDG-2515/2520 Operating Manual Page 27 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. modes will be discussed in more deta il in section 9.0. Enabling and disabling a channel can also happen on t he fly in all modes except Burst Mode. In Burst mode, enabling/disabli ng the channels is not available and Channel 1 and 2 are enabled, Channel 3 and[...]

  • Page 35

    PDG-2515/2520 Operating Manual Page 28 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Figure 9 Logic & Polarity Functional Diagram THE CONFIGS MENU The CONFIGS MENU allows the user to save or load up to 5 different configurations. After selecting the appr opriate configuration to either load or save (1 through 5) hit the ENTE R button and t[...]

  • Page 36

    PDG-2515/2520 Operating Manual Page 29 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Figure 10 Timing Diagram Please note that in external trigger mode, all outputs are delayed from the leading edge of the exte rnal trigger signal. Pulse Generator Mode In Pulse Generator Mode, the PDG-2520 generates pulses at the specified frequency denoted in[...]

  • Page 37

    PDG-2515/2520 Operating Manual Page 30 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Figure 11 Example 1: Pulse Generator Mode Figure 12 Example 2: Pulse Generator Mode w ith logic Pulse Count Mode In Pulse Count Mode, the PDG-2520 generates a series of pulses, the number of which is set by the PULSE CT variables on the respective channel menu[...]

  • Page 38

    PDG-2515/2520 Operating Manual Page 31 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. The PULSE CT variable for each channel c an 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. [...]

  • Page 39

    PDG-2515/2520 Operating Manual Page 32 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Be aware that coming out of this mode, if any variables are out of range by going into a mode that conflicts wit h these settings, the channel/channels will be set back to the default values. Also be aware that channels 1 and 3 stay synchronized and channels 2[...]

  • Page 40

    PDG-2515/2520 Operating Manual Page 33 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Burst Mode In Burst Mode , a set number of pulses (the burst packet) are output from OUT1. Each burst packet is sent at the packet frequency. The burst packet will start ONE peri od of the burst packet frequency after the rising edge of the packet frequency (O[...]

  • Page 41

    PDG-2515/2520 Operating Manual Page 34 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Figure 17 Example: Single Shot Mode[...]

  • Page 42

    PDG-2515/2520 Operating Manual Page 35 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. T roubleshooting Guide No power LED or screen does not come up. Check power source, power switch (located on rear of unit). Pulse exhibits excessive ringing. Check load impedance. Frequency limits. Check duty cycle of EACH channel, both channels must be within[...]

  • Page 43

    PDG-2515/2520 Operating Manual Page 36 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Communications and Remote Operation: The PDG25xx series of pulse generator s have the option of a communications interface. The options are RS232 or GPIB interface. Both interfaces take the same ascii based command set, although the strings are terminated diff[...]

  • Page 44

    PDG-2515/2520 Operating Manual Page 37 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Reply: The reply generated will be either response to the data sent to the unit, as in a query, or an error code. The error code will be prefaced by a ‘#’ and then the ascii code itself. The codes are ex plained below. The error code, whether it is 0 (whic[...]

  • Page 45

    PDG-2515/2520 Operating Manual Page 38 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. 2 READ,WRITE SET MODE TO DIVIDE-BY-N MODE 3 READ,WRITE SET MODE TO BURST MODE 4 READ,WRITE SET MODE TO INTERNAL SINGLE SHOT TRIG 1 READ,WRITE SET CHANNEL TO INTERNAL TRIGGER 2 READ,WRITE SET CHANNEL TO EXTERNAL TRIGGER STAT 0 READ,WRITE DISABLE PULSING 1 READ,[...]

  • Page 46

    PDG-2515/2520 Operating Manual Page 39 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Error Set: First Byte Decimal Hex Error # 0 0x00 NO ERROR # 1-63 0x01-0x3A RESERVED # 64 0x40 DATA IS OUT OF RANGE # 65 0x41 FREQUENCY IS DC LIMITED # 66 0x42 PULSEWIDTH IS FREQUENCY LIMITED # 67 0x43 DELAY IS FREQUENCY LIMITED # 68 0x44 INVALID CONFIGURATION [...]

  • Page 47

    PDG-2515/2520 Operating Manual Page 40 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Cont act DEI We want to hear from you! Directed Energy, Inc. prov ides a standard line of High Voltage Pulse Generators, Laser & Diode Drivers, an d Test & Measurement Equipment. Additionally, DEI has the c apability to provide custom modules and produ[...]

  • Page 48

    PDG-2515/2520 Operating Manual Page 41 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. Factory Service & Support This product has been designed to provi de simple trouble-free use by qualified technical personnel, under normal operating conditions. In the event that you require technical support and/or product se rvice our technical support [...]

  • Page 49

    PDG-2515/2520 Operating Manual Page 42 MNPDG2515-2520R0.doc © 2004 Directed Energy, Inc. W arranty Directed Energy, Inc. (DEI) warrants equipm ent it manufactures to be free from defects in materials and factory workm anship under conditions of normal use, and agrees to repair or replace any standar d product that fails to perform as specified wit[...]