DESCRIPTION

Other features include an:

• External Reference input, where an incoming signal controls the output pulse amplitude
• External Trigger mode, where an incoming pulse triggers an output pulse
• External Drive mode, where an incoming pulse controls both output pulse width and timing.

External Trigger:
1 V positive pulse triggers a pulse (single or double), with internal delay and width controls operative. 50 Ohms input impedance, +/- 5 V maximum input.

Drive:
1 V positive pulse generates an output pulse with a width equal to the width of the incoming pulse, internal delay and width controls are operative. 50 Ohms input impedance, +/- 5 V maximum input.

Internal / External Reference:
With Internal Reference, the output pulse amplitude is controlled only by the Amplitude and Normalize controls.
With External Reference, an applied positive level controls the output pulse amplitude.
Input: +5 V max, 5 k input impedance.

Output Amplitude:
Flat Top:
0.0 V to 2 V into 50 Ohms, 0.0 V to 4 V into high impedance, continuously adjustable with ten-turn potentiometer. 50 Ohm source impedance.
Tail Pulse:
0.0 V to 1.5 V into 50 Ohms, 0.0 V to 3 V into high impedance, continuously adjustable with ten-turn potentiometer. 50 Ohm source impedance.
Polarity:
Simultaneous positive and negative pulses are available.

Trigger Out:
Positive 3 V pulse, 10 ns rise time, 50 Ohms output impedance.

GENERAL

Amplitude Characteristics:
Temperature stability: less than 1% variation from 0-50 ^oC.
Duty cycle variations: Less than 1%up to 90% duty factor.
Linearity: less than 1% integral nonlinearity.

Single cycle:
One pulse occurs each time the push button is depressed.

Normalize:
Multi-turn potentiometer will vary the amplitude up to 50%.

Rise Time (10-90%):
Tail Pulse: 3 ns to 250 ns in six steps.
Flat Top: 4 ns to 250 ns in six steps.

Decay Time Constant (100-37%):
5 ns to 10 µs in eight steps.

Frequency:
A: 10 Hz to 50 MHz, continuously adjustable with coarse and fine controls.
B: External trigger, 0 Hz to 50 MHz

Delay: 10 ns - 10 ms, continuously adjustable with coarse and fine controls.

Width: 5 ns - 5 ms, continuously adjustable with coarse and fine controls.

Flat Top / Tail Pulse: Toggle switch selects the output pulse shape. The width controls are functional only in the flat top mode.

Single/Double Pulse: In the single-pulse mode, a single output pulse occurs which is delayed from the Trigger Out by an amount determined by the Delay controls.
In the double-pulse mode, two equal-width out pulses occur. The first pulse is simultaneous with the Trigger Out. Pulse separation set by delay controls.

PHYSICAL

Size:
Triple width NIM module 4.05" wide x 8,70" high in accordance with TID-20893 (Rev. 3).