Service manual

Table 2-6 DC Bias Monitor Accuracy Test (voltage) Setting
Bias Level
0 V
25 V
40 V
–25 V
–40 V
2 37
Performance Test
Performance Test
2. Performance Test
8. Disconnect the all test equipment from the 4294A, then connect the SHORT
Termination to the 4294A UNKNOWN Terminal.
9. Press [Preset] to initialize the 4294A, then set it as follows.
Setting Operation
OSC Level: 0 V [Source] - [0] - [×1]
DC Bias Mode: Current [Source] - BIAS MENU - MODE - CURRENT
DC Bias Monitor: Current [Display] - BIAS MON - CURRENT
DC Bias Level: 0 A [Source] - BIAS MENU - CURRENT LEVEL - [0] -
[×1]
10. Press [Trigger] - Single for a single sweep measurement:
11. Record the DC Bias Monitor reading to “DC Bias Reading 1” on the calculation sheet.
12. Calculate the result according to the calculation sheet, then record it on the calculation
sheet.
13. Perform Step 11 and 12 for all setting in Table 2-7
Table 2-7 DC Bias Monitor Accuracy Test (current) Setting
Bias Level
0 mA
20 mA
100 mA
–20 mA
–100 mA