THE PULSE OF THE FUTURE PDG-2515 Two Channel Digital Pulse Generator w/ Digital Delay • Sync (T ) Plus Two Independent, Digi- 0 tally Controlled Outputs • 0 to 99.9S Delay and Pulse Width Ranges With 25ns Resolution • 3MHz Maximum Frequency (Internal Trigger), 5MHz (External Trigger) • Store & Recall Up To 5 System Con- figurations • Continuous, Single-Shot, External Trigger, Burst, Counted Burst, Pulse Count And Divide-By-N Modes The PDG-2515 is a precision digital delay and pulse The PDG-2515’s versatility, ease of use and Sync (T ) 0 plus two independent outputs make it well suited for a generator providing two output channels, each with independently adjustable delay and pulse width, plus a wide variety of test and measurement tasks. It is also ideal for laser timing applications, in which the Sync (T ) output Sync (T ) output. The accuracy, precision and flexibility of 0 0 the PDG-2515 makes it well suited for use in laser timing, is used to trigger the pulsed laser and set the system’s repetition frequency. Delayed output 1 controls the laser automated testing and precision pulse applications. Q-Switch, and output 2 can be used to synchronize other The PDG-2515’s Sync (T ) output marks the beginning of 0 elements in the system, such as a detector or data acqui- a timing cycle, and is generated by the internal rate sition hardware. generator or in response to an external trigger. The delay Operating Modes: and pulse width of the two outputs can be set from 0 to 99.9S relative to the T trigger with 25 ns resolution on its 0 Pulse Generator Generates pulses at the rate set by highest precision range. Mode the internal frequency generator, or The PDG-2515 can be triggered internally from 100 by an external trigger millihertz to 3MHz. Three digit frequency resolution up to Pulse Count Mode Outputs pulses at the rate set by the 1MHz, frequency accurate to 2% above 1MHz. External, internal frequency generator or exter- single-shot (front panel push-button) and burst mode nal trigger and stops after N pulses triggers are also supported. In external trigger mode, the Divide By N Channel 1 operates in continuous maximum trigger frequency is 5MHz. (Output-2 Mode) mode, channel 2 pulses every Nth pulse on channel 1 Operating modes include continuous (pulse generator), Burst Mode Generates a burst of pulses, repeat- pulse count, divide-by-N, burst and counted burst, ing at a set interval. Provides user- providing flexible control of the pulse outputs. The output control over the number of pulses in pulse waveforms may be inverted in all operating modes. each burst, the frequency of the Additionally, Output 1 can be internally set to utilize logical pulses within the burst, and the fre- commands AND and OR in conjunction with Output 2. quency of the bursts Output 2 may use the same functions based on Output 1 Counted Burst Generates a burst of pulses, and as well. Mode stops after N bursts The PDG-2515 may be operated through its intuitive front panel controls. Up to five system configurations may be stored in internal non-volatile memory, providing instant recall of frequently-used configurations. DIRECTED ENERGY SPPDG-2515 INCORPORATED © 2004 DIRECTED ENERGY, INC. THE PULSE OF THE FUTURE SPECIFICATIONS PARAMETER Value OUTPUTS Output Channels Two (2) outputs, each with independent digitally controlled delay and pulse width Delay Range 0 to 99.9 Seconds Pulse Width Range 25 Nanoseconds to 99.9 Seconds Delay And Pulse Width Resolution 25 Nanoseconds below 1 Microsecond 50 Nanoseconds from 1 Microsecond to 10 Microseconds 3 Digits Above 10 Microseconds Accuracy (Delay and Pulse Width) ±2% Time Base 120MHz Frequency Synthesizer Trigger Delay (External Trigger to SYNC (T ) 75 Nanoseconds 0 Pulse Generator Mode Output Output 1 Delayed 10µs from T0 Internal Throughput Delay (SYNC (T ) To Out- <25 Nanoseconds 0 put 1 Or Output 2 Rising Edge) <5 Nanoseconds Output Rise & Fall Times (Into 50Ω) Over/undershoot <5% Amplitude +4V into 50W Output Connectors BNC, Front Panel INTERNAL RATE GENERATOR Modes Continuous, Single-Shot, Burst, External Trigger, Divide By N, Pulse Count Rate Single-Shot or 100 millihertz to 3MHz (Internal) Single-Shot to 5MHz (External Trigger) Resolution 3 Digits (<1MHz), 2 Digits (>1MHz) Pulse Count Mode: Output 1 = 5 Counts, Accuracy (Continuous, Pulse Count, Output-2 25 PPM Output 2 = 7 Counts Delayed 8.6µs from T0 Modes) Accuracy (Burst Mode) ±2% Burst and Pulse Count Mode 1 to 65,535 Pulses per Burst or Count EXTERNAL TRIGGER INPUT Type Positive Edge Trigger Input Amplitude TTL into 1KΩ Input Impedance 1KΩ Minimum Trigger Pulse Width 25ns Input Trigger Connector BNC, Front Panel T (SYNC) OUTPUT 0 T (Sync) Output TTL output into 1 MegΩ, 4.5V into 50Ω 0 Connector BNC, Front Panel Divide By N Mode: Output 2 = Output 1 / 6 COMPUTER INTERFACE Interface Type Optional GPIB or RS232 Interface Connector N/A GENERAL Internal Non-Volatile Storage 5 Configurations Operating Temperature Range 0°C to +40°C Cooling Requirements Air cooled Input AC Power 90-264VAC, 47-63Hz, 28W Maximum Dimensions (H X W X D) 3 ½” H x 8” W x 6 1/4” D (8.9cm H x 20.3cm W x 15.9cm D) Weight 2 lbs. (.9kg) Approximate SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE Burst Mode Burst Freq: 100KHz, Packet Freq: 10KHz 1 µS pulses Burst Count: 5 Packet Count: 2 DIRECTED ENERGY SPPDG-2515 INCORPORATED © 2004 DIRECTED ENERGY, INC.