Table of Contents
Advertisement
Step 7 - Record the AM% reading
Step 8 - Set the HP 70427A attenuation to 0 dB
1. Press the
Amplitudes
2. Press the
more 1 of 2
3. Press the
INPUT ATTEN
4. Enter 0 with the numeric keypad.
5. Complete the entry by pressing the
Step 9 - Record the AM% reading again
Step 10 - Subtract the two AM% readings
Step 11 - Look up the mixer non-linearity
Table 14-13
AM % Difference
Non-Linearity
(From Step 10)
(dB)
+
0.0
0.00
+
0.1
0.02,
+
0.2
0.03,
+
0.3
0.05,
+
0.4
0.07,
+
0.5
0.09,
+
0.6
0.10,
+
0.7
0.12,
+
0.8
0.14,
+
0.9
0.15,
+
1.0
0.17,
+
1.1
0.19,
+
1.2
0.21,
+
1.3
0.22,
+
1.4
0.24,
+
1.5
0.26,
+
1.6
0.28,
+
1.7
0.29,
Test 5 - Mixer Linearity (IF)
softkey.
softkey.
softkey.
softkey.
dB
Mixer Non-Linearity
AM % Difference
(From Step 10)
2.1
–
0.02
2.2
–
0.03
2.3
–
0.05
2.4
–
0.07
2.5
–
0.09
2.6
–
0.10
2.7
–
0.12
2.8
–
0.14
2.9
–
0.15
3.0
–
0.17
3.1
–
0.19
3.2
–
0.21
3.3
–
0.22
3.4
–
0.24
3.5
–
0.26
3.6
–
0.27
3.7
–
0.29
3.8
HP 70427A/HP 70428A User's Guide 14-37
Performance Tests
Non-Linearity
(dB)
+
–
0.36,
0.36
+
–
0.38,
0.36
+
–
0.40,
0.39
+
–
0.42,
0.41
+
–
0.43,
0.43
+
–
0.45,
0.44
+
–
0.47,
0.46
+
–
0.48,
0.48
+
–
0.50,
0.49
+
–
0.52,
0.51
+
–
0.54,
0.53
+
–
0.55,
0.54
+
–
0.57,
0.56
+
–
0.59,
0.58
+
–
0.61,
0.59
+
–
0.62,
0.61
+
–
0.64,
0.63
+
–
0.66,
0.65
Advertisement
Table of Contents
