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.


Models Number of Independent Outputs



4 Channels

8 Channels


Output Impedance High 
Output Level 4.0 V (typical) into 1 kΩ
Rise Time (10% - 90%) 3ns (typical)
Jitter 50 ps RMS channel to channel
Adjustable Mode
Output Level 2.0 V to 20.0 VDC into 1 kΩ or 1.0 V to 10.0 VDC into 50 Ω
Amplitude Resolution 10 mV
Current 200 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
Function Generate individual pulses, start a burst or continuous stream
Rate DC to 1/ (200 ns + longest active pulse). Maximum of 5 MHz
Slope Rising or Falling
Threshold 200 mV to 15 VDC
Maximum Input 60 V Peak
Resolution 10 mV
Trigger Accuracy ±3% of Threshold Voltage
Impedance 1.5 kΩ + 40pF
Trigger Jitter < 800 ps RMS
Insertion Delay < 180 ns
Minimum Pulse Width 2 ns
Gate Input
Mode Pulse or Output Inhibit
Polarity Active High or  Active Low
Channel Behavior Global and Individual Channel
Pulse Inhibit Delay 120ns
Output Inhibit Delay 50ns


User Setting Storage 24 Memory Location
Communications USB, RS-232, and Ethernet 
External Clock In 10 MHz – 100 MHz in 1 MHz increments
External Clock Out T0, Rate, Channel, 2x ExtPLL, 1x EXTPLL,  ½ ExtPLL, ¼ Ext, 40 MHz, 20 MHz, 10 MHz, 5 MHz or Disabled.


Dimensions 19” x 10” x 1.75” [843 x 254 x 45mm]
Weight 8 lbs [17.6 kg]
Power 100 - 240 VAC 50/60 Hz <3 A
Fuse 3.15 A, 250 V Time-lag (Qty 2)
Operating Temp 32 - 104°F [0 - 40°C]
Transportation & Storage Temp -40 - 158°F [-40 - 70°C]


Rate 0.0002 Hz to 10.000 MHz
Resolution 10 ns
Accuracy 1 ns + .0001 x period
Jitter < 50 ps RMS
Settling 1 period
Burst mode 1 to 1,000,000 pulses
Timebase 100 MHz, low jitter PLL
Oscillator 50 MHz, 25 ppm
System output modes Single Shot, Burst, Duty Cycle, Continuous
Pulse control Internal Rate Generator, External Trigger, External Gate



Channel Output Modes Single Shot, Burst, Continuous, Duty Cycle
Control modes Internally Triggered, Externally Triggered, and External Gate. Each channel may be independently set to any of the modes
Output Multiplexer Any/all channels may be multiplexed to any/all
Delayed output Output to 9,999,999 pulses
Timebase Same as Internal Rate generator
Pulse Polarity Normal, Complemented, and Inverted


Range 0 - 1000 s
Accuracy 1 ns + .0001 x setpoint
Resolution 250 ps
Pulse Inhibit Delay < 120 ns (typical)
Output Inhibit Delay < 50 ns (typical)


Range 10ns - 1000 s
Accuracy 1 ns + .0001 x setpoint
Resolution 10 ns



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

* Adjustable output module remains the same

I Incrementing (provide automatic high speed incrementing/decrementing of delay and/or pulse width for each channel)
DT15 Dual trigger logic - provides additional trigger via gate input
EU Replaces US standard plug to European standard plug