Agilent Technologies 54853A, Руководство по обслуживанию, Страница: 76 / 194

Chapter 3: Testing Performance
Internal Channel Trigger Sensitivity Test
3–32
Internal Channel Trigger Sensitivity Test
Specification
Equipment Required
Connections
Procedure
Low Sensitivity Measurements @ 2 GHz
1
Connect the microwave signal source to scope channel 1 as shown in the connection
diagram above.
2
Set up the scope as follows:
a Press Default Setup.
b Set channel 1 vertical sensitivity to 1.0 V/div.
c Set the horizontal scale to 2 ns/div.
Low sensitivity mode: 54855A: 0.5 div p-p 0 to 2 GHz, 1.0 div p-p 2 to 4 GHz, <2.5 div @ 5 GHz
54854A: 0.5 div p-p 0 to 2 GHz, 1.0 div p-p 2 to 4 GHz
54853A: 0.5 div p-p 0 to 2 GHz, 1.0 div p-p 2 to 2.5 GHz
High sensitivity mode: 54855A: 0.2 div p-p 0 to 6 GHz
54855A: 0.2 div p-p 0 to 4 GHz
54855A: 0.2 div p-p 0 to 2.5 GHz
Description Critical Specifications Recommended Model/
Part Numbers
Microwave CW Generator Maximum Frequency
≥
6 GHz
Power range: -20 dBm to +16 dBm into 50
Ω
Output resistance = 50
Ω
Agilent E8247C with Opt 520 or
Agilent 82712B with Opt 1E5 or
Agilent 8665B with Opt 004
Microwave Cable Assembly 50
Ω
Characteristic Impedance
3.5 mm (m) or SMA (m) connectors
Max Frequency
≥
18 GHz
Agilent 8120-4948 or
Agilent 11500E or
Gore EKD01D010480
Adapters 3.5 mm (f) to Precision BNC Agilent 54855-67604
Scope
Under
Test
Channel 1
Microwave
Signal
Source
50 Ohm
RF Output