Teledyne LeCroy DA1855A - Manual (Page 72)

DA1855A Differential Amplifier
66 922258-00 Rev A
3. Check ÷10 Attenuator Accuracy
a. Remove the DA1855A output cable/precision termination from the DMM.
b. Remove the sine wave generator output cable/BNC Tee/ attenuator/termination
combination from the +INPUT of the DA1855A.
c. Remove the BNC Tee and attenuator from the cable but leave the standard 50 Ω
termination connected.
d. Connect the terminated output cable from the sine wave generator to the DMM
using the BNC to Banana Plug adapter. Refer to Figure 14.
Figure 14, ÷10 Attenuator Accuracy
e. Set the sine wave generator to read 2.00 Vrms ± 50 mV on the DMM.
f. Record the reading as ‘Sine Wave Generator Output Voltage’ to four digit resolution
in the Test Record.
g. Divide the reading recorded in step 3-f by 10.00 and record the result as ‘Expected
Output Voltage’ to four digit resolution in the space provided in the Test Record.
h. Set the DA1855A GAIN to X1 and the ATTENUATOR to ÷10.
i. Disconnect the sine wave generator output cable and standard 50 Ω termination
from the DMM and reconnect to the +INPUT.
j. Remove the BNC to banana plug adapter from the DMM.
k. Connect the DA1855A AMPLIFIER OUTPUT cable/precision termination to the
DMM. Refer to Figure 15.