--- title: "525 | Six Channel Portable Digital Pulse & Delay Generator" date: 2024-07-25T09:31:21Z modified: 2026-04-15T17:05:13Z permalink: "https://www.berkeleynucleonics.com/model-525/" type: page status: publish excerpt: "" wpid: 16697 --- [](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-13_f.png) ![Six Channel Digital Delay/Pulse Generator Model 525](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-13_f.png) [](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-16_f.png) ![Six Channel Digital Delay/Pulse Generator Model 525](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-16_f.png) [](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-11_f.png) ![Six Channel Digital Delay/Pulse Generator Model 525](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-11_f.png) [](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-10_f.png) ![Six Channel Digital Delay/Pulse Generator Model 525](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-10_f.png) [](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-9_f.png) ![Six Channel Digital Delay/Pulse Generator Model 525](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-9_f.png) [](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-24_f.png) ![Six Channel Digital Delay/Pulse Generator Model 525](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-24_f.png) [](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-1_f.png) ![Six Channel Digital Delay/Pulse Generator Model 525](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-1_f.png) [](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-3_f.png) ![Six Channel Digital Delay/Pulse Generator Model 525](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-3_f.png) [](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-4_f.png) ![Six Channel Digital Delay/Pulse Generator Model 525](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-4_f.png) [](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-19_f.png) ![Six Channel Digital Delay/Pulse Generator Model 525](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-19_f.png) [](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-23_f.png) ![Six Channel Digital Delay/Pulse Generator Model 525](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-23_f.png) [](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-15_f.png) ![Six Channel Digital Delay/Pulse Generator Model 525](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-15_f.png) [](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-14_f.png) ![Six Channel Digital Delay/Pulse Generator Model 525](https://www.berkeleynucleonics.com/wp-content/uploads/images/products/525-14_f.png) - [ Quote ](/get-quote/?interested_product=Model%20525%20|%20Six%20Channel) - [ Contact ](/contact-us/) - [ Datasheet ](#bnc-tab-technical-resources) - [ Price List ](/access-pricelist/) - [ RF Selection Guide ](/ProductSelection/) - [ LabVIEW ](/bnc-labview-driver-list/) #### Model 525 | Six Channel Digital Delay/Pulse Generator The Model 525 is a revolutionary, low-cost portable pulse/delay generator delivering full functionality in a compact, book-sized package (7.125″ × 5.1″ × 1.5″). It offers the highest channel density in its class without compromising performance. Key Features & Specs: - 6 independent channels with individual output selection (trigger, gate, pulse) - 20 MHz repetition rate - 4 ns timing resolution (some sources note 2 ns) - <50 ps RMS jitter - Pulse width: 10 ns to 1000 s - Delay range: up to 1000 s from trigger - Modes per channel: Single Pulse, Continuous, Burst, Duty Cycle, Cycle Counting - External trigger: up to 30 V peak, ≥20 ns width, rising/falling edge selectable - USB-powered (laptop, charger, or battery pack) – ideal for mobile engineers - PC-based Graphical User Interface (no bulky front panel) for reliable control An excellent upgrade/replacement for the discontinued Picosecond Pulse Labs PSPL2600C, combining portability, multi-channel flexibility, and high precision for research, synchronization, and device triggering. Overview Specifications Technical Resources Downloadable Resources Media Price Lists FAQ ##### Features - Number of Channels: 6 Independent Outputs - Resolution: 4 ns - Width / Delay Accuracy: 10 ns + 0.0001 x settings - Channel to Channel Jitter: < 250 ps RMS - Output Pulse Amplitude: TTL - Power Source: Standard USB ##### Service Advantage - In-Stock Same Day Shipping - No-Risk Demo (14 Days) - Warranty: Full 2 Year Warranty - Integration Assistance, Full Customer Support (Phone or Web-Based) ##### Internal Rate Generator Frequency (Period) Range 0.001Hz to 20MHz (1000s to 50ns) Resolution & Accuracy 4 ns Jitter < 50 ps RMS Burst / Duty Cycle Mode 1 to 1,000,000 pulses Timebase 100 MHz, low jitter PLL Oscillator 50 MHz, 50 ppm Crystal Oscillator Pulse Control Modes Internal Rate Generator, External Trigger / Gate Systems Output Modes Single, Continuous, Burst, Duty Cycle, Cycle Counts Pulse & Period Counter 32 Bit Synchronized Update Mode Updates widths and delays on command ##### Pulse Delay Generation Width / Delay Resolution 4 ns Width Range 10 ns – 1000 s Width Accuracy 10 ns + 0.0001 x (width + delay settings) Delay Range ±1000 s Delay Accuracy 5 ns + (0.0001 x delay setting) Multiplexer Any or all channels may be combined to any or all outputs. Channel Output Modes Single Shot, Normal, Burst, Duty Cycle Channel Control Modes Internally triggered or externally gated. Each channel may be independently set to any of the modes. Jitter (Channel to Channel) < 250 ps RMS Shipping Dimensions 12x10x5″ Shipping Weight 5 lbs ##### Advanced Features Channel Multiplexing One of the 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 Rates 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 ##### 525 GUI Main WIndow ![Model 525 | Six Channel Digital Delay/Pulse Generator](data:image/svg+xml,%3Csvg%20xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg'%20viewBox%3D'0%200%20526%20648'%2F%3E) [Model 525 Datasheet](/wp-content/uploads/product-downloads/525_datasheet_0.pdf) Downloadable resources such as datasheets, firmware, software, drivers and products manuals. Alternatively, you can browse resources directly by visiting our [downloads page](/downloads). - [Product Datasheets](/downloads#ddg-datasheets) - [Product Firmware](/downloads#ddg-firmware) - [Product Software and Drivers](/downloads#ddg-softwaredrivers) - [Product Manuals](/downloads#UserManualsPulseandDelay) ## Playlist ![BNC Model 525 Multi-Channel Digital Delay and Pulse Generator](https://img.youtube.com/vi/F0BZJNqskFE/maxresdefault.jpg) #### BNC Model 525 Multi-Channel Digital Delay and Pulse Generator 1:48 ![Introduction to the Model 525 GUI](https://img.youtube.com/vi/ypA-9_Nihcw/maxresdefault.jpg) #### Introduction to the Model 525 GUI 4:15 ![BNC Divide by Function for the Model 577 and Model 525](https://img.youtube.com/vi/7LDbxOY_pd0/maxresdefault.jpg) #### BNC Divide by Function for the Model 577 and Model 525 3:43 [ Berkeley Nucleonics Price List 2026](https://www.berkeleynucleonics.com/download/19881/?tmstv=1776272713) [ a](#) #### Front Office | How do I get a quick quote or expedite an order? To check price and delivery, to place a Purchase Order, or to expedite an existing order, please call 415-453-9955, email or fill out a [Get a Quote form](https://www.berkeleynucleonics.com/get-quote). Typical response time is less than 2 hours. [ a](#) #### Front Office | Where is the Berkeley Nucleonics headquarters? ur main headquarters is in California. Our address is 2955 Kerner Blvd, San Rafael CA 94901. We have sales offices throught the United States and in many European and Asian countries. We also have a nationwide network of approved trainers to handle product training and installation. Contact the factory at 415-453-9955 or for your closest resource. ##### Features - Number of Channels: 6 Independent Outputs - Resolution: 4 ns - Width / Delay Accuracy: 10 ns + 0.0001 x settings - Channel to Channel Jitter: < 250 ps RMS - Output Pulse Amplitude: TTL - Power Source: Standard USB ##### Service Advantage - In-Stock Same Day Shipping - No-Risk Demo (14 Days) - Warranty: Full 2 Year Warranty - Integration Assistance, Full Customer Support (Phone or Web-Based) ##### Internal Rate Generator Frequency (Period) Range 0.001Hz to 20MHz (1000s to 50ns) Resolution & Accuracy 4 ns Jitter < 50 ps RMS Burst / Duty Cycle Mode 1 to 1,000,000 pulses Timebase 100 MHz, low jitter PLL Oscillator 50 MHz, 50 ppm Crystal Oscillator Pulse Control Modes Internal Rate Generator, External Trigger / Gate Systems Output Modes Single, Continuous, Burst, Duty Cycle, Cycle Counts Pulse & Period Counter 32 Bit Synchronized Update Mode Updates widths and delays on command ##### Pulse Delay Generation Width / Delay Resolution 4 ns Width Range 10 ns – 1000 s Width Accuracy 10 ns + 0.0001 x (width + delay settings) Delay Range ±1000 s Delay Accuracy 5 ns + (0.0001 x delay setting) Multiplexer Any or all channels may be combined to any or all outputs. Channel Output Modes Single Shot, Normal, Burst, Duty Cycle Channel Control Modes Internally triggered or externally gated. Each channel may be independently set to any of the modes. Jitter (Channel to Channel) < 250 ps RMS Shipping Dimensions 12x10x5″ Shipping Weight 5 lbs ##### Advanced Features Channel Multiplexing One of the 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 Rates 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 ##### 525 GUI Main WIndow ![Model 525 | Six Channel Digital Delay/Pulse Generator](data:image/svg+xml,%3Csvg%20xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg'%20viewBox%3D'0%200%20526%20648'%2F%3E) [Model 525 Datasheet](/wp-content/uploads/product-downloads/525_datasheet_0.pdf) Downloadable resources such as datasheets, firmware, software, drivers and products manuals. Alternatively, you can browse resources directly by visiting our [downloads page](/downloads). - [Product Datasheets](/downloads#ddg-datasheets) - [Product Firmware](/downloads#ddg-firmware) - [Product Software and Drivers](/downloads#ddg-softwaredrivers) - [Product Manuals](/downloads#UserManualsPulseandDelay) ## Playlist ![BNC Model 525 Multi-Channel Digital Delay and Pulse Generator](https://img.youtube.com/vi/F0BZJNqskFE/maxresdefault.jpg) #### BNC Model 525 Multi-Channel Digital Delay and Pulse Generator 1:48 ![Introduction to the Model 525 GUI](https://img.youtube.com/vi/ypA-9_Nihcw/maxresdefault.jpg) #### Introduction to the Model 525 GUI 4:15 ![BNC Divide by Function for the Model 577 and Model 525](https://img.youtube.com/vi/7LDbxOY_pd0/maxresdefault.jpg) #### BNC Divide by Function for the Model 577 and Model 525 3:43 [ Berkeley Nucleonics Price List 2026](https://www.berkeleynucleonics.com/download/19881/?tmstv=1778700930) [ a #### Front Office | How do I get a quick quote or expedite an order? ](#) To check price and delivery, to place a Purchase Order, or to expedite an existing order, please call 415-453-9955, email or fill out a [Get a Quote form](https://www.berkeleynucleonics.com/get-quote). Typical response time is less than 2 hours. [ a #### Front Office | Where is the Berkeley Nucleonics headquarters? ](#) ur main headquarters is in California. Our address is 2955 Kerner Blvd, San Rafael CA 94901. We have sales offices throught the United States and in many European and Asian countries. We also have a nationwide network of approved trainers to handle product training and installation. Contact the factory at 415-453-9955 or for your closest resource. [ ![](data:image/svg+xml;charset=utf-8,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' viewBox%3D'0 0 1105 130'%2F%3E) ](/products/microwave-rf-signal-generators)