BNC Model 525 Six Channel Digital Pulse / Delay Generator


The Model 525 represents a revolutionary new pulse generator that offers full function in a compact and cost effective package. At just 7.125“ x 5.1“ x 1.5” this is one of the smallest units available, but you will not be disappointed in its performance, features, or programmability. Finally, a low-cost pulse generator that does not sacrifice performance or function.

The Model 525's interface is USB only, which eliminates the bulky front panel components and reduces the potential for mechanical problems. The timing and triggering flexibility is outstanding, with 20MHz rep rates, 2ns timing resolution, <50ps RMS jitter and internal or external triggering options. Outputs can be selected for each channel, giving users the ability to trigger, gate or pulse various devices in a research project with different requirements. Single Pulse, Continuous, Burst, Duty Cycle and Cycle Counting are all selectable options for each channel. Wide pulses are also possible, with a width range of 10ns – 1000s and a delay from trigger range up to 1000s. Trigger externally with signals up to 30 V peak and widths as low as 20ns on the rising or falling edge.


Quick Specs

  • Channels: 6 Independent Channel Outputs
  • Resolution: 2 ns (software selectable)
  • Accuracy: 10 ns + 0.0001 X (width or delay)
  • Jitter: < 50 ps RMS (Channel to Channel)
  • Memory: 6 Storage Slots

Channel Multiplexing

One of the more unique features of the Berkeley Nucleonics pulse generators is the ability to combine the timing of any or all channels together and output them out of any of the output connectors. The multiplexing function (MUX) can be set through remote communications via a computer.

Selectable Clock Reference

The Model 525 offers additional inputs and outputs for external clock synchronizing. User selectable input and output reference frequency (10 MHz to 100MHz). Synchronize with the Mode Lock Oscillator of a laser or phase lock multiple units with one clock.

Flexible Gating Options

The Model 525 is packed with gating options for almost any setup. You may gate individual channels or gate all. Gate immediately (output inhibit) or gate after a pulse (pulse inhibit).

External Trigger Options

Select channels for internal(free run) / external triggering. Triggered channels have flexible output choices: single pulse, burst at its clock rate, continuous pulse train or a series of on/off pulses (duty cycle).

Individual Rate

Each channel can have individual channel rates (either T0 or integer division of T0).

Negative Delay

Use the convenient negative delay feature to reference one channel with respect to another channel in positive or negative time increments. By allowing a channel to reference another channel as its trigger, you can synchronize the channels with respect to each other.

Note that Negative Delay cannot trigger a channel before your initial trigger. It is intended to complement the channel referencing option.




Internal Rate Generator
Internal Rate Generator0.001Hz to 20MHz (1000s to 50ns)
Resolution & Accuracy2 ns
Jitter< 50 ps RMS
Burst / Duty Cycle Mode1 to 1,000,000 pulses
Timebase100 MHz, low jitter PLL
Oscillator50 MHz, 50 ppm crystal oscillator, optional 1ppm clock
Pulse Control ModesInternal rate generator, external trigger / gate
Systems Output ModesSingle, continuous, burst, duty cycle, cycle counts
Pulse & Period Counter32 Bit
Synchronized Update ModeUpdates widths and delays on command
Pulse Delay Generation
Width / Delay Resolution2 ns
Width Range10 ns - 1000 s
Width Accuracy10 ns + 0.0001 x (width + delay)
Delay Range±1000 s
Delay Accuracy5 ns + (0.0001 x delay)
MultiplexerAny / all channels may be combined  to any / All outputs. 
Channel Output ModesSingle Shot, Normal, Burst, Duty Cycle
Channel Control ModesInternally triggered or externally gated. Each channel may be independently set to any of the modes.
Jitter (Channel to Channel)< 50 ps RMS


Manuals and support documents

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