Item # DS-101, Synthesizer on PPM Instruments

• Tel: (216) 595-3200 • Fax: (216) 595-3203 • Email: info@ppminc.com

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	Item # DS-101 Synthesizer
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Synthesizer

Precision Sine Source
Distortion < 0.2%
30 PPM Frequency Accuracy
20 PPM Frequency Stability
Balanced/Unbalanced
External Clock Inputs
Easy Operation

The PPM Model DS-101 is a digitally synthesized frequency generator capable of creating low distortion sine waves over the range of 0.1 Hz to 1 MHz. The DS-101 output sine wave amplitude can be set to any value between 1 mV and 10 V rms into a 600 ohm load. The output may be configured as either a balanced or unbalanced source. Frequency and amplitude are selectable by a front panel keypad, a front panel ADJUST Rotary Encoder, or an IEEE- 488 interface via a rear panel connector. The sinusoidal output waveform is generated by an internal 20MHz clock which is bypassed when an external 5 MHz or 10 MHz reference clock is applied through a rear panel BNC connector.

The Model DS-101 is portable and housed in a compact enclosure. Selected frequency, amplitude and other information are displayed on a two line vacuum fluorescent display. The unit is powered by 117 VAC 50/60 Hz supplied via a standard line cord to the rear of the unit.
Specifications presume instrument operated in Balanced mode with 600 Ω load impedance unless otherwise stated.

Specifications

Features

Output Frequency¹

0.1 Hz to 1 MHz

Output Amplitude²

0.001 V to 10 Vrms into 600 ohms (2.0 mV to 20 Vrms unloaded)

Output Impedance

600 ohms ± 10%, balanced or unbalanced, at 1 kHz

Frequency Resolution

0.1 Hz

Frequency Accuracy

± 30 ppm with internal clock, or that of external clock

Frequency Stability

Better than ± 20 ppm/hour with internal clock

Dimensions (H x W x D)

5.6" x 8" x 8.75"

Weight

7.5

External Clock

5 MHz or 10 MHz, TTL levels, 5 V DC max

Output Level Accuracy

Better than ± 10% of setting value, 10Hz < F < 100 kHz

Output Level Flatness

Better than ± 8% of setting value, F < 100 kHz

Output Distortion

< 0.2% at 10 V rms for 100 Hz < F < 200 kHz
< 0.5% at 1 V rms for 10 Hz & F < 30 kHz

Output Power Line Noise

< -45 dBc, ΔF < 300 Hz for F < 100 kHz

Output Non-Harmonics

< -55 dBc, ΔF > 300 Hz for F, 100 KHz

Display Frequency Resolution

0.1 Hz

Display Amplitude Resolution

0.001 Vrms

Remote Control

IEEE-488

Operating Temperature

0 to 50°C, 0-90% non-condensing relative humidity

Storage Temperature

-20° to 70° C, 0-100% non-condensing relative humidity

Power Requirement

108-132 VAC 50/60 Hz at 15 Watts

Calibration Interval

12 months

¹ Use of instrument at very low output levels is subject to increased signal to noise ratio as floor-noise for signals below 50 mVrms becomes a significant percentage of the output signal. Additionally, line frequency interference from ground loops between the generator and circuits it is connected to may be significant.
² Use of instrument at very low output levels is subject to increased signal to noise ratio as floor-noise for signals below 50 mVrms becomes a significant percentage of the output signal. Additionally, line frequency interference from ground loops between the generator and circuits it is connected to may be significant.

PPM, Inc. • 23500 Mercantile Rd., Cleveland, OH 44122 5914 •
Tel: (216) 595-3200 • Fax: (216) 595-3203 • Email: info@ppminc.com

Item # DS-101 Synthesizer

Output Frequency1

Output Amplitude2