0.03Hz to 3MHz frequency range Simultaneous display of frequency & amplitude External seven digit 120MHz counter (not TG315) High waveform quality at all frequencies & levels 2mV to 20V pk-pk from 50 Ohms or 600 Ohms Variable symmetry with constant frequency Auxiliary TTL/CMOS output 1000:1 frequency change by vernier or sweep voltage
Models meeting a variety of needs The TG320 adds an external frequency counter with up to seven digits of resolution covering 5Hz to 120MHz.
Exceptional waveform quality The TG300 series provides very high waveform quality under all conditions. That means low sinewave distortion, low aberation triangle waves and fast-edged square waves with low overshoot. Unlike many competitive products good waveform quality is maintained throughout the frequency range, and at low output levels. All models have bi-directional variable symmetry at constant frequency from 1:9 to 9:1.
Wide range level control The main output has a maximum emf of 20V pk-pk from a 50 Ohm or 600 Ohm source. An amplitude vernier with a range of 40dB is combined with a -20dB switched attenuator to provide levels down to 20mV pk-pk. Variable DC offset of +/-10V is available via a centre 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 or via the sweep control input.
Digital display for precision and convenience All the TG300 series generators incorporate a large dual-section digital display. Unlike competitive products the display provides a readout not just of frequency, but of amplitude or offset simultaneously. Auto-ranging reciprocal measurement gives 4-digit resolution with rapid update right down to Hz levels, below this an alternative technique is used to retain fast display update a sub-hertz frequencies. The output level display can be selected to show any of three values: volts pk-pk, volts rms, or dc offset.
External counter with seven digit resolution The TG320 and TG330 have an external counter mode which utilises the full width of the display to provide up to seven digits of resolution. The frequency range is from 5Hz up to 120MHz in two ranges, and the input sensitivity is better than 50mV rms. A measurement period of 0.5 or 5 seconds can be selected. A reciprocal counting measurement system is used which ensures high resolution regardless of input frequency.
0.03Hz to 3MHz in 7 overlapping decade ranges with fine adjustment by a vernier.
1000:1 on each range.
Specifications apply for the top decade of each frequency range and maximum output into 50 Ohm termination.
<0.5% on 300, 3k<0.5% on 300, 3k and 30k ranges; <1% on 3, 30 and 300k ranges; all harmonics >25dB below fundamental on 3M range. and 30k ranges; <1% on 3, 30 and 300k ranges; all harmonics >25dB below
±0.2dB to 200kHz; ±2dB to 3MHz.
Better than 99% to 200kHz
Mark - Space Ratio:
1:1 ± 1% to 100kHz
Variable typically 1:9 to 9:1 (on top decade of each range), frequency divided by 10.
METER FUNCTIONS (generator mode)
Auto-ranging reciprocal measurement giving 4 digit resolution for frequencies down to 1Hz; maximum resolution is 0.001Hz.Accuracy ±1 digit for 0.2Hz to 3MHz. Below 0.2Hz accuracy is ±1% of range full scale (symmetry off).
Display shows peak-to-peak amplitude or rms value. Display corrected for attenuator setting. 3-digit resolution, accuracy typically 5% of range. Clipping indicator on display.
3-digit resolution; accuracy typically ±2% of setting ±1 digit. Display corrected for attenuator setting. Clipping indicator on display.
MAIN - 50 Ohm
2mV to 20V peak-peak open circuit (1mV to 10V peak-peak into 50 Ohms) in four switch-selectable ranges with 20dB vernier control within each range
0dB, -20dB, -40dB, -60dB
DC Offset Range:
±10V from 50Ohms. DC offset plus signal peak limited to ±10V (±5V into 50Ohms). DC offset plus waveform attenuated proportionally by the attenuator.
MAIN - 600 Ohm
Alternative output socket offering the same facilities as the 50 Ohms socket.
0 to 5V TTL/CMOS logic levels capable of driving 2 standard TTL loads. Frequency, symmetry and phase as main outputs
0 to 3V for 1000:1 sweep
Max. Input Voltage:
Better than 1%
Max. Slew Rate:
Moulded ABS case with tilt stand.
220 to 240 volts AC nominal 50/60Hz or 110 to 120 volts AC nominal 50/60Hz by rear panel adjustment. Installation category II.
TEMPERATURE & ENVIRONMENTAL & OTHER
+5°C to +40°C, 20% to 80% RH.
-10°C to +65°C
Indoor use at altitudes up to 2000m. Pollution degree 2.
260(W) x 88(H) x 235(D)mm (10.2 x 3.4 x 9.2"), excluding handle and feet.