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数字延迟脉冲发生器
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P400 4-channel benchtop digital delay and pulse
generator
 

  • 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

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.

 

 

SPECIFICATIONS:

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?or 1 M?

  Minimum pulse width: 2 ns at 0 to 2 V (25 ns in burst mode)

DDS TRIGGER RATE

0.01 Hz to 10 MHz in 0.01 Hz steps

PULSE OUTPUTS (A TO D AND T0)

VOHprogrammable -4.3 to
  +11.8 V

  VOLprogrammable -5.0 to +4.1 V

  0.1 V steps, 50?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

DELAYRANGE

999. seconds, delay or width of A,
  B, C, D outputs, total delay + width not to exceed 999. 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?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

TIMEBASE

Standard TCXO:

  Initial calibration±0.25 PPM

  Drift <2 PPM/year

  Temperature coefficient below 50 ppb/°C

  Jitter below 2 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 Ethernet

  Ovenized oscillator timebase (OCXO)

  Single/dual rackmount adaptors