BNC Model 588, 1U Rack Mount 8 Channel DDG


4 / 8 Channel Models

250 ps Resolution

50 pS RMS Jitter

Flexible Gating and Trigger Options

Independent clock rates for each channel

Clock In & Clock Out

Programmable (USB / RS-232 / Ethernet Standard)

Dual Inputs (2 Gate / Gate+Trig / 2 Trig)



250pS Delay & Width Resolution

Trigger, Gate, Delay, Pulse or Sync

Sync to an External Clock (up to 100 MHz)

Master/Slave or Multiple Unit Slave

Pulse Pick (up to 100 MHz)

Combine Pulses on One Channel


With the Model 588, we have packaged the precision pulse and digital delay timing designs in a convenient package for embedded and OEM applications. The new Model 588 1U DDG gives users 8 channels of precision timing in a package designed for remote applications and large system gating/syncronizing.

Our precision clock and many channel features compliment the low-profile packaging to give system integrators a refined rack-mount alternative to multiple boxes and cables cobbled together around a test setup. When it comes to custom timing requirements, our applications team is available to address your most demanding needs.

The Model 588 Digital Delay/Pulse Generator represents the latest in timing and synchronizing capabilities. With a unique 19” 1U form factor, the Model 588 is clearly our most innovative instrument to accurately synchronize any series of events.

The 588’s eight independent outputs, dual trigger/gate inputs and external clock reference input make it ideal for laser system timing applications. The system can directly phase lock to an external timebase up to 100MHz in frequency and down to 20mV in amplitude. This allows synching directly to a laser photodiode signal and provides complete system timing relative to the laser timing with low jitter. The 588 also provides a Clock Output that is capable of driving a 50 Ohm load and can be used to provide a master timebase to other delay generators or equipment.

The core technology in precision timing of the 588 offers 250pS Delay & Width resolution and 50pS internal jitter. Ethernet / USB interface, complex burst sequences, Divide-by-N, Setting Profiles, Dual Triggers, Dual Gating, Clock Divider, Pulse Picking, and Negative Delays allow users great confidence in setting up an experiment or synchronizing multiple events. Complimentary NI certified LabVIEWtm drivers available.


ModelsNumber of Independent Outputs



4 Channels

8 Channels


Output ImpedanceHigh 
Output Level4.0 V (typical) into 1 kΩ
Rise Time (10% - 90%)3ns (typical)
Jitter50 ps RMS channel to channel
Adjustable Mode
Output Level2.0 V to 20.0 VDC into 1 kΩ or 1.0 V to 10.0 VDC into 50 Ω
Amplitude Resolution10 mV
Current200 mA typical, 400 mA (short pulses)
Rise Time (10% - 90%)15 ns (typical) @ 20V into Hi-Z (25 ns typ @ 10V into 50 Ω)
Slew Rate> 0.1V/ns
Overshoot< 100mV + 10% of pulse amplitude


Trigger Input
FunctionGenerate individual pulses, start a burst or continuous stream
RateDC to 1/ (200 ns + longest active pulse). Maximum of 5 MHz
SlopeRising or Falling
Threshold200 mV to 15 VDC
Maximum Input60 V Peak
Resolution10 mV
Trigger Accuracy±3% of Threshold Voltage
Impedance1.5 kΩ + 40pF
Trigger Jitter< 800 ps RMS
Insertion Delay< 180 ns
Minimum Pulse Width2 ns
Gate Input
ModePulse or Output Inhibit
PolarityActive High or  Active Low
Channel BehaviorGlobal and Individual Channel
Pulse Inhibit Delay120ns
Output Inhibit Delay50ns


User Setting Storage24 Memory Location
CommunicationsUSB, RS-232, and Ethernet 
External Clock In10 MHz – 100 MHz in 1 MHz increments
External Clock OutT0, Rate, Channel, 2x ExtPLL, 1x EXTPLL,  ½ ExtPLL, ¼ Ext, 40 MHz, 20 MHz, 10 MHz, 5 MHz or Disabled.


Dimensions19” x 10” x 1.75” [843 x 254 x 45mm]
Weight8 lbs [17.6 kg]
Power100 - 240 VAC 50/60 Hz <3 A
Fuse3.15 A, 250 V Time-lag (Qty 2)
Operating Temp32 - 104°F [0 - 40°C]
Transportation & Storage Temp-40 - 158°F [-40 - 70°C]


Rate0.0002 Hz to 10.000 MHz
Resolution10 ns
Accuracy1 ns + .0001 x period
Jitter< 50 ps RMS
Settling1 period
Burst mode1 to 1,000,000 pulses
Timebase100 MHz, low jitter PLL
Oscillator50 MHz, 25 ppm
System output modesSingle Shot, Burst, Duty Cycle, Continuous
Pulse controlInternal Rate Generator, External Trigger, External Gate



Channel Output ModesSingle Shot, Burst, Continuous, Duty Cycle
Control modesInternally Triggered, Externally Triggered, and External Gate. Each channel may be independently set to any of the modes
Output MultiplexerAny/all channels may be multiplexed to any/all
Delayed outputOutput to 9,999,999 pulses
TimebaseSame as Internal Rate generator
Pulse PolarityNormal, Complemented, and Inverted


Range0 - 1000 s
Accuracy1 ns + .0001 x setpoint
Resolution250 ps
Pulse Inhibit Delay< 120 ns (typical)
Output Inhibit Delay< 50 ns (typical)


Range10ns - 1000 s
Accuracy1 ns + .0001 x setpoint
Resolution10 ns



Replaces Standard (AT20) TTL Hi-Z output with 50 Ω output impedance (for driving 50 Ω loads).

* Adjustable output module remains the same

IIncrementing (provide automatic high speed incrementing/decrementing of delay and/or pulse width for each channel)
DT15Dual trigger logic - provides additional trigger via gate input
EUReplaces US standard plug to European standard plug

We offer BNC pulse generators only if end users are in Europe, other customers please contact BNC directly.