Industry Comparison Chart | Datasheet (Turkish) | Datasheet (German) | Press Release (PDF 404kb) | 725 Introduction (.ppt)
Researchers and system integrators, needing controls
and diagnostics for their experiments and systems, are
regularly forced to build from scratch or to piece
together several boxes. Many hours are spent learning
the idiosyncrasies of each box and how to properly
couple boxes to each other. Each box has its own
programming protocol. Valuable time is lost to tracking
connections, taming noisy signals, adjusting timing on
multiple boxes and other aggravating chores. Now
one box will eliminate much of this.
The Model 725 coordinates, integrates and synchronizes complicated setups, simply, reliably and affordably. Featuring eight timing
channels with programmable logic, unique timing modes and 10 ns resolution, the Model 725 outperforms a rack full of instruments,
specialized boxes, filters and cables. Inputs can be logic signals, switches, transducers, interlocks, computer commands and
gauges. The model 725 can be programmed and controlled easily via Labview or Windows. It contains sophisticated logic, gating
and filtering. It has eight inputs, eight outputs and eight separate timers.
• Trigger-pulse delay: 50 ns - 1370s
• Inputs: 8 external and 7 internal
• Outputs: 8 internal (to timing processors)
• Delay jitter from internal source: 200 ps
• External trigger duration: 50 ns
• Control and time experiments quickly and easily
• Eliminate delays, gates, timers, filters and cables
• Designed by experimenters for experiment control
• Warmup, interlock, arm, sync, digital delay, trigger
The model 725’s logic is engineered for fast data throughput (11 ns) and minimal throughput spread (~1 ns). It would be
difficult to match this performance with external cabling and hard-wired logic.
Timing Diagram for Model 725 shows Independant Timers for Each Channel, Interrelated
Innovative Software, Unique Controller
The Model 725 hardware controller can operate in stand-alone mode or via computer control. The computer control system
uses its own user-friendly software, timerPRO or LabView,™ both tested and proven in many experiments. timerPRO makes
it easy to create sophisticated control schemes from your PC. With the Model 725 linked to your computer, you’ll quickly
program, refine and expand experiments. Using stand-alone mode, you can store and recall up to 64 complete settings, then
trigger and monitor an experiment from the Model 725’s front panel. You’ll have the flexibility to design experiments offline,
then to embed the controller in your test environment for “set and forget” operation. The firmware in the Model 725 is field
upgradeable, allowing access to new timing modes and capabilities as they become available.
timerPRO’s opening window summarizes the settings and lets you alter them.
Complex Timing Sequences with Digital Delays
A precision Digital Delay Generator such as the BNC Model 575
uses a single or dual trigger with a common clock to synchronize multiple
events and cannot be re-triggered until the completion of the longest timed event. The Model 725 addresses a matrix of timing issues with 8 triggers, 8 timers and 8 outputs. The triggering of each of these timers is independent of the other timers. The triggers can be logical
combinations of inputs and outputs – AND’s, OR’s, XOR’s and Negated. Also any number of timers can be triggered
together to function as a traditional multi-channel digital delay generator with sub-uS timing.
Some applications examples
In a two-pulse experiment, two lasers were fired in rapid succession to illuminate and capture successive snapshots of a
high speed fluid flow. The Model 725 handled all aspects of the experiment, from warming up the lasers to precisely timing
the nanosecond- scale pulses. Using the Model 725’s onboard logic and software interface, the experimenters implemented special “alignment” and
“calibration” modes for preparing the experiment and “laser ready” interlocks for safety.
High speed gas flow:
A combustion-driven shock tube was used to study high speed gas flows. The Model 725 was the heart of the experiment,
taking charge of ignition, pressure sensing, detonation, laser timing, data acquisition and more complex, interrelated timing sequences were orchestrated on the PC using the virtual front panel software.
Experiment Inputs: Control panel switches, pressure transducers, accelerometers, ionization gauges, safety interlock, computer
Experiment Outputs: Shutter, Camera, Laser Flashlamp, Laser Q-Switch, Data Acquisition, Oscilloscope, Diaphragm Burster,