136 Agilent U1251A/U1252A User’s and Service Guide
7 Performance Tests and Calibration
Step Test Function Range 5520A Output
   Error from nominal 1 year
U1251A U1252A
19 Press   button to go to 
 A mode
5 A 5 A, 1 kHz ± 42 mA ± 37 mA
3A 3 A, 5 kHz ± 96 mA ± 96 mA
10 A
[11]
  10 A, 1 kHz ± 100 mA ± 90 mA
Square Wave 
Output
Use 53131A
20 Turn the rotary switch to the 
 position
120 Hz @ 50% N/A ± 26 mHz
4800 Hz @ 50% N/A ± 260 mHz
   Duty Cycle 100 Hz @ 50% N/A ± 0.398%
[12] 
100 Hz @ 25% N/A ± 0.398%
[12] 
100 Hz @ 75% N/A ± 0.398%
[12] 
Use 34410A
   Amplitude 4800 Hz @ 
99.609%
N/A ± 0.2V