HP E1563A, User Manual, Page: 150 / 166

150 HP E1563A and E1564A Verification Tests
Gain
Verification
The gain verification tests check the positive and negative full scale gain on each
range for each channel. An external DCV source provides the input and the
digitizer’s "L" terminal is connected to the "G" terminal connecting LO to GUARD.
The input voltage is slightly less than full scale to avoid overloading the range.
1. Set up the digitizer as follows:
Reset the digitizer *RST
Set channel 1 to the 62 mV range; VOLT1:RANG 62E-3
2. Set the DC Standard output to 55 mV.
3. Perform the measurement using the INITiate command. Retrieve the reading
using the DATA? 1,(@1) command.
4. Verify the result is within specified limits and record the result.
5. Change ranges using VOLT<channel>:RANG <range> and make a
measurement for each DCV input and range shown in Table D-4 verifying
the result is within specified limits. Record the result.
6. Repeat step 5 for channel 2 on the E1563A 2-Channel Digitizer and channels
2 through 4 on the E1564A 4-Channel Digitizer.
Table D-4 Gain Verification Test Points.
INPUT
HP E1563A /
HP E1564A
Range
Error from
nominal
+55 mV 62 mV
±
30.25
µ
V
-55 mV 62 mV
±
30.25
µ
V
+0.24V 0.25V
±
110
µ
V
-0.24V 0.25V
±
110
µ
V
+0.95V 1 V
±
522.5
µ
V
-0.95V 1 V
±
522.5
µ
V
+3.8V 4 V
±
2.1 mV
-3.8V 4 V
±
2.1 mV
+15V 16 V
±
8.25 mV
-15V 16 V
±
8.25 mV
+60V 64 V
±
33 mV
-60V 64 V
±
33 mV
+100V 256 V
±
55 mV
-100V 256 V
±
55 mV