P400 4-channel benchtop digital delay and pulse generator

Digital Delay and Pulse Generator - P400
  • 4 delay and width outputs
  • 1 picosecond resolution
  • Up to 1000 seconds delay
  • 25 nanosecond insertion delay
  • Less than 10 picoseconds RMS typical jitter
  • 10 MHz rep rate
  • Programmable trigger threshold
  • Adjustable output levels
  • Optional Ethernet
  • Onboard help
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The P400 is a benchtop digital delay and pulse generator that generates four separately programmable delay-and-width outputs. The P400 can generate delays up to 1000 seconds in 1 picosecond increments, and is capable of a high repetition rate of 10 MHz. Applications for the P400 include laser timing, ICCD camera systems, ATE systems, and radar testing.

Triggering - P400 triggers include internal, external, remote, or line. The internal DDS rate generator may be programmed from 0.01 Hz to 10 MHz in 0.01 Hz steps. The external trigger features selectable trigger level, slope, and termination impedance. Line trigger is enabled via an external AC line adaptor. The P400 may also be triggered manually or from the remote RS-232 or Ethernet interfaces. Trigger gating and burst facilities are standard.

Timebase - The standard P400 timebase is a precision TCXO temperature-compensated crystal oscillator. An optional ovenized oscillator is available for applications requiring extreme accuracy and lowest jitter. Multiple P400s may be synchronized to each other, or locked to an external 10 MHz source.

Onboard Help - An extensive help system explains each pushbutton, input, output, and setting on the 4-line front-panel display.

Menus - Each function of the P400 has a dedicated single-level control menu invoked by an associated pushbutton. Data entry may be via numeric keys or by the spinner knob.

Remote Control - All P400 parameters may be programmed remotely using standard RS-232 or optional Ethernet interfaces.

FUNCTION Four-channel digital delay and pulse generator
Independently programmable delay/pulse width/polarity/high level/low level on all four delay outputs A, B, C, and D
CHANNELS Four outputs of programmable delay, pulse width, polarity, and voltage levels
TRIGGER SOURCES Internal DDS synthesizer, external source, AC line with external transformer adaptor, remote command, and manual pushbutton
TRIGGER RATE 10 MHz maximum
EXTERNAL TRIGGER INPUT Programmable threshold: -2.4 to +4.6 V
Programmable slope
Programmable termination: 50 Ω or 1 MΩ
Minimum pulse width: 2 ns at 0 to 2 V (25 ns in burst mode)
PULSE OUTPUTS (A TO D AND T0) VOH programmable -4.3 to +11.8 V
VOL programmable -5.0 to +4.1 V
0.1 V steps, 50 Ω source impedance
4 V/ns slew rate
INSERTION DELAY 25.0 ns ± 500 ps
DELAY RESOLUTION 1 ps, delay or width of A,B,C,D outputs
DELAY RANGE 999.999999999999 seconds, delay or width of A, B, C, D outputs, total delay + width not to exceed 999.999999999999 seconds
A to D timings are relative to T0 rising edge
DELAY ACCURACY T0, rises 25 ns ± 500 ps after trigger
A to D outputs, ± 400 ps ± timebase error
A to D delay and width edges are monotonic to 50 ps
JITTER T0, 20 ps RMS max from external trigger
A to D outputs (25 ps RMS + timebase jitter) max, either edge from external trigger or any other output
DDS OUTPUT Sine wave, 4 V p-p typical, 50 Ω source impedance
COMMUNICATIONS Standard RS-232 with SCPI-like command set
Optional Ethernet using Telnet mode
Command set identical to RS-232 mode
INDICATORS 20-character by 4-line, alphanumeric display
LEDs indicate selected channel, activity, triggers, communications, and errors
Initial calibration ±0.25 PPM
Drift <2 PPM/year
Temperature coefficient below 50 ppb/°C
Jitter below 4 ns per second of delay
Optional OCXO:
Initial calibration ±0.1 PPM
Drift <1 PPM/year
Temperature coefficient below 3.6 ppb/°C
Jitter below 400 ps per second of delay
Either oscillator can be phase-locked to an external 10 MHz source
PACKAGING 8" (W) x 12” (L) x 4.5" (H), exclusive of external power module
Weight: 8 lbs
POWER 100 to 240 VAC, 47 to 63 Hz, 60 W max using AC adaptor furnished
Operable from +24 VDC, 2.5 amps max via 2.5 mm x 5 mm female connector
OPTIONS Rear-panel transformer-isolated 5 to 50 V programmable high-voltage pulse outputs
10BASE-T and 100Base-T Ethernet
Ovenized oscillator timebase (OCXO)
Single/dual rackmount adaptors
OEM versions
CONFORMANCE Designed to meet UL/FCC/CE requirements

PDF Block Diagram: P400 digital delay and pulse generator

PDF Datasheet: P400 digital delay and pulse generator

PDF Manual: P400 digital delay and pulse generator

P400-2: 4-channel benchtop digital delay and pulse generator

P420-1: Ovenized crystal oscillator for P400

P426: Rack mount for P400

P431: External ethernet communication for P400

P450: High Voltage (50 V) rear panel outputs for P400

P491: Extra power supply for P400

P492: AC line triggering transformer for P400

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