ValueTronics International, Inc. Pulse Generator 8112A

The 8112A is a Pulse Generator from Agilent. A pulse generator is a piece of electronic test equipment that engineers use to generate rectangular pulses. An electromagnetic pulse generator is best for digital, not analog, circuits. Engineers can inject pulses into a piece of equipment under test as a stimulus as they test the device, using pulses to confirm the equipment’s proper operation. Additional Features: 50 MHz, 5 ns, 16 V p-p (into 50 Ohm) Full pulse capability Modulation Ramps and haversines Width/duty cycle Device protection Error recognition and self test Specifications Specifications apply with 50-ohm load, and temperatures in the range 0°C to 55°C. Timing (specifications apply for min transition times) Period: 20.0 ns to 950 ms Delay: 75.0 ns to 950 ms Double pulse: 20.0 ns to 950 ms Width: 10.0 ns to 950 ms Accuracy: ± 5% of progr value ± 2 ns (delay: ± 4 ns) Duty cycle: 1% to 99% (Min: 10 ns. Max: period -10 ns) Accuracy: ± 10% of progr value Pulse Characteristics (voltages double when driving into open circuit) Levels High level: -7.90 V to 8.00 V Low level: -8.00 V to 7.90 V Accuracy: ± 1% of progr value ± 3% amplitude ± 40 mV Settling time: 100 ns + transition time Transition times Fixed: 5 ns typical Linear and Cosine: 6.5 ns to 95.0 ms (max edge ratio 1:20 within a 1.5-decade range. Ranges overlap by 0.5 decade) Accuracy: ± 5% of programmed value ± 2 ns Preshoot, overshoot, ringing: ± 5% ± 10 mV (variable transitions), ± 10% ± 10 mV (fixed transitions) Output resistance: 50 ohm ± 5% Operating modes: Normal, Trigger, Gate, Ext Width (pulse restoration), Ext Burst (1 to 1999 pulses) Control (Modulation) Modes Period, delay, width covered in 8 non-overlapping decades (max input frequency 8 kHz.) High level: —8 V to +8 V, independent of progr low level (min input transition 200 μs) General HP-IB: all keys programmable. Learn, status and error reporting capability Interface functions: SH1, AH1, T6, L4, SR1, RL1, PPO, DC1, DT1 Memory: retains current operating state. 9 store/recall locations; 1 fixed set of parameters Repeatability: factor 4 better than accuracy Environmental Storage temperature: -40°C to +65°C Operating temperature: 0°C to 55°C Humidity: 95% RH, 0°C to 40°C Power: 100/120/220/240 V rms; +5%; -10%; 48 to 440 Hz; 120 VA max Size: 89 H x 212.3 W x 450 mm D (3.5" x 8.36" x 17.7") The Agilent 8112A is a fully programmable 50 MHz pulse generator with 5 ns transitions and 32 V p-p (into open circuit) max output amplitude. All pulse parameters are variable including delay and double pulse spacing. Besides the comprehensive trigger modes, external modulation capabilities extend applicability; upper level, width, period and delay-modulated signals are available. These can be combined with the trigger modes so that complex real-life signals like modulated bursts are simulated easily. Step response and trigger hysteresis measurements require fast transitions or sawtooth signals as obtained in the HP 8112A's linear transition mode—either fixed 5 ns or variable from 6.5 ns. The new cosine transitions, also variable from 6.5 ns, mean that band-filtered signals are now just as simple to obtain. Sensitive devices are protected by programming output limits and the upper level can be controlled by the device supply. Also, constant energy or constant width can be programmed. Dual channel operation is feasible by operating HP 8112A's in a master/slave combination. For really easy operation a green button gives error-free settings. A new softkey operating concept plus detailed error recognition make the HP 8112A's powerful versatility easy to handle.