The Sigtrona APG1780DA-SMA is a digitally adjustable electronic pulse generator capable
of producing output pulses ranging from 17 to 80 ps. The pulse trigger input features a
configurable trigger level and hysteresis, enabling reliable triggering on any high-speed
logic signal within a ±3 V range.
An alternative variant, the APG1780DA-DIFF, provides a
differential trigger input leveraging lower jitter and higher noise immunity of differential
signals and eliminating the need to adjust a trigger level. The APG1780DA can be either
used as a standalone device operated via its front panel or remotely controlled over a USB
interface.
| Digitally adjustable pulse width: | 17 ps to 80 ps in 3 ps increments |
| Trigger rate: | Beyond 2 GHz |
| Power: | USB-powered (3.2 W only); external power optional |
| Control options: | Standalone via front panel or remote via USB |
| Trigger input options: | Single-ended or differential, with adjustable hysteresis, accepts NECL, PECL, CML, LVDS |
| Outputs: | Two complementary 2.4 mm outputs |
| Coupling: | DC coupled input and outputs |
| Internal trigger generator: | 1 Hz to 72 MHz |
| Compact size: | 50 × 60 × 18 mm |
Negative pulse width of 24.5 ps and an amplitude close to 400 mV.
Zero pulse width and amplitude close to 400 mV.
Even shorter pulse: 17 ps with 175 mV amplitude.
Longer pulses have a "flat top": 71 ps pulse width, amplitude > 400 mV.
Type: Single-ended trigger input
Connector: SMA female
Termination: 50 Ω
Coupling: DC coupled
This variant uses a 50 Ω terminated SMA input.
Type: Differential trigger input
Connector: SATA (pins A+, A−)
Termination: 100 Ω differential
Coupling: DC coupled
This variant uses a 100 Ω differentially terminated SATA input and triggers on zero crossing without level adjustment. A factory option is available to use pins B+, B− instead of A+, A−, or to change termination to 50 Ω to ground.