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> Hewlett packard hp 3325A synthesized function generator
Hewlett packard hp 3325A synthesized function generator
Agilent / HP 3325A synthesized function generator
The HP 3325A Synthesizer Function Generator generates signals with minimum frequency of 1 Hz and the following maximum frequencies:
Positive slope ramp 10 kHz
Negative slope ramp 10 kHz
The frequency can be selected from 11 digits. Output amplitude can be adjusted from 1mV to 10V peak peak and can be selected and displayed either in V rms or dBm (50 ohms). Possible also an DC offset of +/-4.5 V. The high output voltage option 002 (like the shown device) can supply a 40 Vpp in to >=500 ohms load. Also very usefull the option 001 a High Stability Frequency Reference a quartz inside a temperature controlled oven. Of course the instrument has an HP-bus interface and analogue and digital outputs for many applications.
The HP3325A instrument is a nice general purpose generator leaving not many wishes open, ideally for electronic development. Testing slew rate of an audio amplifier by using the clean steep sqaure wave signal. The high voltage option is very usefull to test power amplifier without the need of a preamplifier.
No circiut designer want's to miss the instrument - really.
HP 3325A simplified specification (taken from a 1984 manual):
1 Hz for frequencies below 100 kHz and 1mHz for frequencies 100 kHz and higher
Frequency Accuracy standard instrument:
+/-5 * 10 exp -6 of selected value (20 C to 30 C)
Frequency Stability standard instrument:
+/-5 * 10 exp -6 per year (20 C to 30 C)
0.1 Hz to 50 kHZ: no harmonic greater than -65dB
Rise and Fall TIme: <= 20 nanoseconds, 10% to 90% at full output
Linearity, 10% to 90%, best fit straight line: +/-0.05% of full p-p output for each range
Amplitude Accuracy [no Attenuator (in Range 1) in 50 ohms and no DC offset]:
Sine Wave 0.001 Hz to 100 kHz accuracy relative to programmed amplitude +/-0.1dB
Square Wave 0.001 Hz to 100 kHz accuracy relative to programmed amplitude +/-1.0%
Triangle 0.001 Hz to 2 kHz accuracy relative to programmed amplitude +/-1.5% (+/-5% for 2 kHz to 10 kHz)
Ramps 0.001 Hz to 500 Hz accuracy relative to programmed amplitude +/-1.5% (+/-10% for 500 Hz to 10 kHz)
Amplitude Flatness [no Attenuator (in Range 1) in 50 ohms and no DC offset]:
Sine Wave 100 kHz to 20 MHz accuracy relative to programmed amplitude at 1 kHz +/-0.3dB
Square Wave 100 kHz to 20 MHz accuracy relative to programmed amplitude at 1 kHz +/-10%
Sine Wave only, Modulation Envelope Distortion: -30 dB to 80% modulation at 1 kHz, 0V DC offset
Range: +/-719.9 with respect to arbitrary starting phase. or assigned zero phase. Resolution: 0.1 Stability: +/-1 phase/ C
Linearity (Sine Function): +/-0.5%, best fit straight line
Amplitude 0 to dc 10V linear ramp proportional to sweep frequency (sweep up only)
Option 001 High Stability Frequency Reference:
Ambient Stability: +/-5 * 10exp-8 (0 to 55 C referenced to +30 C)
Aging Rate: +/-5 * 10exp-8 per week (after 72 hours continuous operation)
Aging Rate: +/-1 * 10exp-7 per month (after 15 days continuous operation)
Option 002 High Voltage Output:
Frequency Range: Sine and Square Wave: 1 Hz to 1 MHz
Triangle and Ramps: 1 HZ to 10 kHz
Amplitude Range: 4mVp-p to 40Vp-p (>=500 ohms, <500pF load) maximum output current +/-40mA
Amplitude Accuracy: (at 2 kHz) +/-2% of full output for each range
Amplitude Flatness: +/-10% of programmed amplitude
DC Offset: 4 times the range of standard instrument
Harmonics: (under full load) 10 Hz to 50 kHz, no harmonic greater than -65dB
for 50 kHz to 200 kHz -60dB and 200 kHz to 1 MHz -40dB.
Square Wave: Rise/Fall Time <=125 nanoseconds, 10% to 90% at full output with >500 ohms and <500 pF load
Overshoot: <10% of peak amplitude with same load.
