40 Chapter1
General Information
Recommended Test Equipment
Digital voltmeter Range: −15 Vdc to +120 Vdc 3456A* A,T
Accuracy: <±1 mV on 10 V range
Input impedance: ≥1 M Ω
Probes
DVM test leads ≥36 inches, alligator clips, probe tips 34118A A,T
High-frequency probe No substitute 85024A T
High-voltage probe Voltage division ratio: 1000:1 34111A T
Accessories
Directional Frequency range: 1 to 80 MHz 8721A P
bridge Coupling: 6 dB (nominal)
Maximum coupling deviation: <1 dB (nominal)
Directivity: 40 dB minimum
Impedance: 50 Ω (nominal)
Directional Frequency range: 2.0 to 8.1 GHz 0955-0098 P
coupler Coupling: 16.0 dB (nominal)
Maximumcouplingdeviation:±1dB(nominal)
Directivity: 14 dB minimum
Flatness: 0.75 dB maximum
(two required)VSWR: <1.45
Insertion loss: <1.3 dB
10 dB step Attenuation range: 30 dB 355D P,V
attenuator Frequency range: dc to 80 MHz
Connectors: BNC (f)
1 dB step Attenuation range: 12 dB 355C P,V
attenuator Frequency range: dc to 80 MHz
Connectors: BNC (f)
20 dB fixed Frequency range: dc to 18 GHz 8491B P,V
attenuator Attenuation accuracy: <±1 dB Option 020
Maximum SWR: 1.2 (dc to 2.9 GHz)
10 dB fixed Frequency range: dc to 18 GHz 8491B P,V
attenuator Attenuation accuracy: <±0.6 dB Option 010
Maximum SWR: 1.2 (dc to 2.9 GHz)
Connector: APC 3.5
Termination Frequency range: dc to 50 GHz 85138B P,V
Impedance: 50Ω
Maximum SWR: <1.22
Connector: 2.4 mm (f)
Table 1-4 Recommended Test Equipment
Instrument Critical Specifications for Equipment
Substitution
Recommended
Model
Use
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