GW Instek SFG-830 User Manual - Manual (Page 35)

p. 32 SFG-830
7.9 Checking Frequency Accuracy
The deviation should be within
±5ppm.
n Set conditions:
Function : Sine Wave Amplitude : 1Vp-p
Frequency : 10MHz
o Use a counter with 50 ohm load to measure the output.
p Check and make sure the output is 10MHz
± 40Hz.
7.10 Checking the Amplitude
(1) Check the Amplitude of Sine Wave
The deviation should be
±0.5dB (±5.9%).
n Set conditions: Function : Sine Wave Amplitude : 3.54Vrms (10Vp-p)
Frequency : 100Hz
o Use a DMM (FLUKE-8842) at ACV range with 50 ohm load to measure the
output.
p Check and make sure that 3.33Vrms < output < 3.74Vrms.
q Keep the same Function and Amplitude, and set Frequency to be 1kHz, 10kHz,
100kHz, 1MHz, and 2 ~ 30MHz (step 2MHz) in turn.
r Perform step o~q (use measuring receiver HP-8902 or equivalent needed for
HF Amplitude check instead) in each frequency setting until the Frequency =
30MHz.
s Set conditions:
Function : Sine Wave Amplitude : 1Vrms
Frequency : 100Hz
t Use a DMM (FLUKE-8842) at ACV range with 50 ohm load to measure the
output.
u Check and make sure that 0.94Vrms < output < 1.04Vrms.
v Keep the same Function and Amplitude, and set Frequency to be 1kHz, 10kHz,
100kHz, 1MHz, and 2 ~ 30MHz (step 2MHz) in turn.
w Perform step t~v (use measuring receiver HP-8902 or equivalent needed for
HF Amplitude check instead) in each frequency setting until the Frequency =
30MHz.
(2) Checking the Amplitude of Square Wave
The deviation should be
±12%.
n Set conditions: Function : Square Wave Amplitude : 10Vp-p
Frequency : 100Hz
o Use an oscilloscope with 50 ohm load to measure the output.
p Check and make sure that 8.8Vp-p < output < 11.2Vp-p.
q Keep the same Function and Amplitude, and set Frequency to be 1kHz, 10kHz,
100kHz, 1MHz, and 2 ~ 30MHz (step 2MHz) in turn.
r Perform step p~q in each frequency setting until the Frequency = 30MHz.