SIGLENT SDS1102CML - To Verify DC Gain Accuracy

SIGLENT
20 SDS1000CML/CNL/DL Service Manual
To verify DC Gain Accuracy
DC Gain Accuracy error = | 1- { (V
pos
－V
neg
) / (V
Setting(+)
－V
Setting(-)
) } | <3%
Note: “V
Setting
” represents DC voltage output level
This test verifies DC Gain Accuracy of all channels.
Steps: 1. Set the DC voltage source output level to 0v.
2. Connect channel 1 of the oscilloscope to the DC voltage source of
FLUKE 9500B using its specified cable.
3. Set the Volts/Div of channel 1 to 10v/div.
4. Set the DC voltage output level to the positive voltage listed below
and then record the reading as Vpos.
5. Reverse the polarity of the DC voltage source and then record the
reading as Vneg.
6. V
sub
= V
pos
－V
neg
, calculate V
sub
and then check to see if it is in the
accuracy limits range.
7. Set the Volts/Div of channel 1 from 5v/div to 2mv/div, and then record
the reading in the same way as step 4 to 6.
8. Set DC voltage source output level to 0v.
9. Disconnect the connection of channel 1.
10. Check channel 2 in the same way as step 1 to 9.
Table 3-2 DC Gain Accuracy
Volt/Div DC voltage output level
s
Accuracy limits range for V
sub
10v/div +30V, -30V 58.2V~61.8V
5v/div +15V, -15V 29.1 V~30.9 V
2v/div +6V, -6V 11.64 V~12.36 V
1v/div +3V, -3V 5.82 V~6.18 V
500mv/div
+1.5V, -1.5V 2.91 V~3.09 V
200mv/div
+600mV, -600mV 1.164 V~1.236 V
100mv/div
+300mV, -300mV 582 mV~618 mV
50mv/div
+150mV, -150mV 291 mV~309 mV
20mv/div
+60mV, -60mV 116.4 mV~123.6 mV
10mv/div
+30mV, -30mV 58.2 mV~61.8 mV
5mv/div +15mV, -15mV 29.1 mV~30.9 mV
2mv/div +6mV, -6mV 11.52 mV~12.48 mV