Technical Specifications

Designed and built in Europe by:

Thurlby Thandar Instruments Ltd. operates a policy of continuous development and

reserves the right to alter specifications without prior notice.

Thurlby Thandar Instruments Ltd.

Glebe Road, Huntingdon. Cambs. PE29 7DR United Kingdom (UK)

Tel: +44 (0)1480 412451 Fax: +44 (0)1480 450409

Email: sales@tti-test.com

Web: www.tti-test.com

THURLBY THANDAR INSTRUMENTS

TG300 Series

3MHz function and sweep/function generators

FREQUENCY

Frequency Range:

0.03Hz to 3MHz in 7 overlapping decade

ranges with fine adjustment by a vernier.

Vernier Range:

1000:1 on each range.

OPERATING MODES

Specifications apply for the top decade of each frequency range and maximum out-

put into 50

termination.

SINE

Distortion:

<0.5% on 300, 3k and 30k ranges; <1% on

3, 30 and 300k ranges; all harmonics >25dB

below fundamental on 3M range.

Amplitude Flatness: ±0.2dB to 200kHz; ±2dB to 3MHz.

TRIANGLE

Linearity:

Better than 99% to 200kHz

SQUARE WAVE

Rise/Fall Times:

<100ns

Mark - Space Ratio: 1:1 ± 1% to 100kHz

DC

Range:

±10V unterminated

SYMMETRY

Symmetry Range:

Variable typically 1:9 to 9:1 (on top decade of

each range), frequency divided by 10.

METER FUNCTIONS (generator mode)

Frequency:

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).

Amplitude:

Display shows peak-to-peak amplitude or rms

value. Display corrected for attenuator set-

ting. 3-digit resolution, accuracy typically 5%

of range. Clipping indicator on display.

DC Offset:

3-digit resolution; accuracy typically ±2% of

setting ±1 digit. Display corrected for attenu-

ator setting. Clipping indicator on display.

OUTPUTS

MAIN - 50 Ohm

Amplitide

2mV to 20V peak-peak open circuit (1mV to

10V peak-peak into 50

Ω) in four switch-

selectable ranges with 20dB vernier control

within each range

Attenuator Ranges: 0dB, -20dB, -40dB, -60dB

DC Offset Range:

±10V from 50

Ω. DC offset plus signal peak

limited to ±10V (±5V into 50

Ω). DC offset

plus waveform attenuated proportionally by

the attenuator.

MAIN - 600 Ohm

Alternative output socket offering the same

facilities as the 50

Ω socket.

AUX OUT

0 to 5V TTL/CMOS logic levels capable of

driving 2 standard TTL loads. Frequency,

symmetry and phase as main outputs

SWEEP OUT

3V ramp from 600

Ω (TG330 only)

EXTERNAL COUNTER (TG320 and TG330 only)

Frequency Ranges: 5Hz to 25MHz and 20MHz to 120MHz,

fully autoranging to maximum resolution

Input Sensitivity:

50mV rms (sinewave)

Input Impedance:

1M

Ω/25pF

Measurement Time: Selectable 0.5s or 5s

Resolution:

6 digits in 0.5s; 7 digits in 5s

Accuracy:

±1 digit ± timebase accuracy

Timebase Accuracy: ±10ppm initial error; ±5ppm/year ageing rate;

typically less then 0.5ppm/

o

C. Adjustment

point for closed-case recalibration

SWEEP MODES

EXTERNAL

Input Impedance:

10k

Ω

Input Sensitivity:

0 to 3V for 1000:1 sweep

Max. Input Voltage: ±10V

Sweep Linearity:

Better than 1%

Max. Slew Rate:

0.1V/us

INTERNAL (TG330 only)

Sweep Range:

1000:1 within each range.

Sweep Rate:

Adjustable, typically 20ms to 20 secs.

Sweep Mode:

Linear or logarithmic. Sweep start and stop

frequencies displayed at the press of a but-

ton.

Sweep Output:

3V ramp from 600

Ω.

AMPLITUDE MODULATION (TG330 only)

Depth:

Variable 0 to 100% typical.

Frequency:

400Hz (internal). DC to 20kHz (external).

External Sensitivity: Approximately 2V peak-to-peak for 50% mod-

ulation. Input impedance 40k

Ω.

GENERAL

CASING

Moulded ABS case with tilt stand.

POWER REQUIREMENTS

Input Voltage:

220 to 240 volts AC nominal 50/60Hz or

110 to 120 volts AC nominal 50/60Hz by rear

panel adjustment. Installation category II.

Power Consumption: 25VA max.

TEMPERATURE & ENVIRONMENTAL

Operating Temp.

Range:

+5

o

C to +40

o

C, 20% to 80% RH.

Storage Temp.

Range:

-10

o

C to +65

o

C

Environmental:

Indoor use at altitudes up to 2000m.

Pollution degree 2.

SIZE

260(W) x 88(H) x 235(D)mm (10.2 x 3.4 x

9.2"), excluding handle and feet.

WEIGHT

1.9kg (4.2lb)

SAFETY

Complies with EN61010-1.

EMC

Complies with EN61326.

seven digit 120MHz external frequency counter

internal sweep generator, amplitude modulation

82100-0095