HP 3325A simplified specification (taken from a 1984 manual):
Frequency Resolution:
1µHz 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)
Signal Characteristics:
Sine Wave and harmonics:
0.1 Hz to 50 kHZ: no harmonic greater than -65dB
50 kHz to 200 kHz: -60dB
200 kHz to 2 MHz: -40dB
2 MHz to 15 MHz: -30dB
15 MHz to 20 MHz: -25dB
Square Wave:
Rise and Fall TIme: <= 20 nanoseconds, 10% to 90% at full output
Triangle:
Linearity, 10% to 90%, best fit straight line: +/-0.05% of full p-p output for each range
Ramps (positive or negative):
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%
Amplitude Modulation:
Sine Wave only, Modulation Envelope Distortion: -30 dB to 80% modulation at 1 kHz, 0V DC offset
Phase Offset:
Range: +/-719.9° with respect to arbitrary starting phase. or assigned zero phase. Resolution: 0.1° Stability: +/-1° phase/°C
Phase Modulation:
Linearity (Sine Function): +/-0.5%, best fit straight line
Synch Out (into 50 ohms):
X-Drive Output:
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) |