Wavetek 143 - Page 8

Symmetry
Symmetry of all waveform outputs is continuously adjust-
able from 1:19 to 19:1. Varying symmetry provides variable
duty cycle pulses, sawtooth ramps and distorted sine waves.
NOTE
When SYMMETRY control is used, indicated
frequency is divided by approximately 10.
12:2 Frequency Precision
Dial Accuracy
+3% of full range from X .01 Hz to X 1 MHz.
+5% of full range on X 10 MHz.
Time Symmetry
Square wave variation less than:
+1% from 0.001 Hz to 200 kHz
+0.5% from 20 Hz to 20 kHz
1.2.3 Amplitude Precision
Amplitude Change With Frequency
Sine variation less than:
0.1 dB for 0.001 Hz to 200 kHz
0.5 dB for 200 kHz to 2 MHz
3.0 dB for 2 to 20 MHz
Step Attenuator Accuracy
0.3 dB per 20 dB step at 2 kHz.
1.2.4 Waveform Characteristics
Sine Distortion
< 0.5% on X 100 Hz to X 10 kHz.
< 1.0% on X .01 to X 10 Hz and X 100 kHz.
All harmonics 34 dB below fundamental on X 1 MHz.
All harmonics 26 dB below fundamental on X 10 MHz.
Square Wave Rise/Fall Times
At FUNCTION OUT < 20 ns for 15V p-p output into 500.
load.
1.2.5 General
Stability
Short Term: +0.05% for 10 minutes.
Long Term: +0.25% for 24 hours.
Percentages apply to amplitude, frequency and dc offset.
Environmental
Specifications apply at 25°C +5°C. Instrument will operate
from 0°C to 50°C ambient temperatures.
Dimensions
28.6 cm (11% in.) wide; 13.3 cm (15% in.) high;
27.3 ст (10% in.) deep.
Weight
5 kg (11 Ib) net; 6.6 kg (14% Ib) shipping.
Power
90 to 105V, 108 to 126V, 198 to 231V and 216 to 252V
selectable; 48 to 400 Hz; less than 30 watts.
NOTE
All specifications apply from 10 to 100% of a
selected frequency range, when FUNCTION
OUT is at maximum апа 50Q terminated, with
SYMMETRY control at OFF. Symmetry and
vernier affect frequency calibration. Maximum
possible asymmetry ¡s a function of frequency
setting.