TG550 5MHz Function Generator with Sweep

• Simultaneous display of frequency & amplitude
• Frequency locking for crystal controlled stability
• Precision internal linear or logarithmic sweep
• External frequency counter with 7 digit resolution
• Very high waveform quality at all frequencies & levels
• 1000:1 frequency change by vernier or sweep voltage

A state-of-the-art instrument
The function generator is one of the most versatile pieces of test & measurement instrumentation available. 

It can generate a variety of precision waveshapes over a range of frequencies from mHz to MHz. It can provide a wide range of controlled amplitudes from a low-impedance source, and maintain constant amplitude as the frequency is varied.

Voltage control of frequency enables a source of swept frequency to be generated for frequency response testing. AM and FM modulation can also be added. The TG550 represent the state-of-the-art in 5MHz analogue function generators.

Exceptional waveform quality
The TG550 provides very high waveform quality under all conditions.

That means low sinewave distortion, low aberration triangle waves and fast-edged square waves with low overshoot.

Unlike many competitive products good waveform quality is maintained through- out the frequency range and at low output levels.

Variable symmetry for pulse and ramp waveforms
The TG550 series provides bi-directional variable symmetry from 1:9 to 9:1. Unlike some products, frequency is independent of symmetry setting.

Wide range level control 
The TG550 series provides a main output with a maximum emf of 20V pk-pk from a 50Ω or 600Ω source. An amplitude vernier with a range of 20dB is combined with two switched attenuators of -20dB and -40dB to provide levels down to 2mV pk-pk unterminated. Variable DC offset of ±10V is available via a center detent control. An auxiliary output provides a fixed 0V to +5V level suitable for driving both TTL and CMOS loads.

Wide sweep range
Each range can be swept by at least 1000:1 either manually, via the external in- put, or using the built-in sweep generator.

Frequency locking for exceptional stability
The TG550 includes a digital frequency locking system that gives it a level of frequency stability that cannot be matched by conventional analogue function generators.

Once the frequency has been set, pressing the Lock key engages a measure-and- correct circuit which compensates for the small thermal and mechanical drifts that inevitably occur in an analogue generator.

The frequency is compared to a crystal con- trolled reference and is maintained to within 0.01% of the set frequency.
 

Simultaneous Display of Frequency and Level External Frequency Counter with Seven Digit Resolution

Dual digital displays for precision & convenience
The TG550 incorporates a large dual section digital display.

Unlike competitive products the display provides a readout not just of frequency, but of amplitude or offset simultaneously.

Fast and accurate frequency measurement
Auto-ranging reciprocal measurement gives 4-digit resolution with rapid update right down to Hz levels. Accuracy is within ±1 digit (±0.02% at full scale).

To maintain a fast update at sub-Hz frequencies, the measurement mode is changed resulting in 3-digit resolution and reduced accuracy.

However, when compared to the normal fixed gate-time meters used in other prod- ucts the TG550 provides both higher accu- racy and faster display update across the whole frequency range.