HP 70427A User Manual page 547

Procedure
Performance Tests
Test 5 - Mixer Linearity (IF)
Step 1 - Set up the measuring receiver
•
Frequency: 600 MHz manual tune
•
AM mode
•
Average detector
•
20 kHz low-pass filter
•
2.1
SPCL
•
6.1
SPCL
Step 2 - Initialize the HP 70427A
Press the
INSTR PRESET
Step 3 - Set the HP 70427A input frequency to 18 GHz
1. Press the softkey.
Output
2. Press the softkey.
FREQ
3. Enter 18 with the numeric keypad.
4. Complete the entry by pressing the
Step 4 - Set the HP 70427A input attenuator to 10 dB
1. Press the
Amplitudes
2. Press the
more 1 of 2
3. Press the
INPUT ATTEN
4. Enter the 10 with the numeric keypad.
5. Complete the entry by pressing the
Step 5 - Set up the sweep oscillator
•
Frequency: 18 GHz
•
Power: –2.5 dBm
•
Modulation: External AM
Step 6 - Set up the pulse/function generator
•
Frequency: 10 kHz
•
Waveshape: Square
•
Level: Adjust for about 33% ± 0.5% AM measured on the
measuring receiver.
14-36 HP 70427A/HP 70428A User's Guide
(selects 40% AM range)
(selects fast AM ALC)
key.
softkey.
GHz
softkey.
softkey.
softkey.
softkey.
dB