Technical specifications
XIV - 56
Function Generators
Technical Specifications
CONTinuous function
Waveforms
•
sine
triangle
square
logic pulses (programmable high and low levels)
positive pulses (TTL level)
continuous (DC: offset)
Signal frequency
•
GX 305
: from 0.001 Hz to 5 MHz in 10 ranges (decades)
GX 310
: from 0.001 Hz to 10 MHz in 10 ranges (decades)
GX 320
: from 0.001 Hz to 20 MHz in 11 ranges (decades)
•
3 internal ranges, for DDS resolution:
F
≤
1 kHz the DDS resolution is approx. 1 mHz
1 kHz < F
≤
10 kHz the DDS resolution is approx. 10 mHz
10 kHz < F
≤
20 MHz the DDS resolution is approx. 280 mHz
•
Frequency display on the LCD: 5 digits (units: Hz, kHz, MHz)
•
Settings: direct using the encoder, automatic range switching
•
Precision:
±
30 ppm for F < 10 kHz
±
20 ppm for F
≥
10 kHz
for sine, square, LOGIC and triangle (duty cycle 50 %)
•
Temperature ratio:
±
20 ppm / ° C
•
Long term derivation:
±
5 ppm / an
MAIN OUT signal
•
Adjustable amplitude in open circuit: from 0 to 20 Vpp
Accuracy: from 0.1 to 20 Vpp < 5 % from 1 mHz to 10 MHz
±
1,5 dB for F > 10 MHz (± 0.5 dB typical)
Accuracy guaranteed for Vpp display, but be careful with the Vrms display
resolution: with a sine wave, 1 Vrms = 2 square root of 2 Vpp
≈
2.83 Vpp.
•
Impedance : 50
Ω
± 3 %
•
DC offset voltage: adjustable from -10 V to +10 V in open circuit (OFFSET).
Precision
:
±
5 % amplitude (residual offset <
±
5 mV)
•
Protection from input voltage surge: 60 V
DC
, 40 V
AC
Sine Signal
•
Distortion:
- for F
≤
50 kHz: typical distortion rate 0.05 %, < 0.15 % max.
- for 50 kHz < F
≤
1MHz, harmonics < -41 dB / H1
- for F > 1 MHz, harmonics < -36 dB / H1
•
Measuring conditions:
- device operational for at least 1 hour
Triangle Signal
•
Frequency:
≤
2 MHz
•
Linearity error:
< 1 % max at 200 kHz from 10 % to 90 %
of the signal amplitude
•
Duty cycle:
resolution 1 %
10 to 90 % for 0.2 Hz
≤
F
≤
1 kHz
30 to 70 % for 1 kHz < F
≤
10 kHz
50 % for F < 0.2 Hz and F > 10 kHz
frequency error for duty cycle
≠
50 %, < 2 %