User Manual

STTRS DOCUMENTATION

Document Number 80-330501HBKM – Issue A - Draft Page 482 of 500

25.3.3.3. Four Way Splitter/Combiner (05-003302)

The Splitter/Combiner used is a device for accurately matching two or more RF signals to single or

multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs and ensuring that the

VSWR and insertion losses are kept to a minimum. Any unused ports should be terminated with an

appropriate 50Ω load.

Four Way Splitter (05-003302) Specification

PARAMETER SPECIFICATION

Frequency range: 700-980MHz

Bandwidth: 180MHz

Rejection: >14dB

Insertion loss: <7.0dB (in band)

Connectors: N type, female

Weight: <1.5kg

operational

-20%C to +60%C

Temperature

range:

storage -40%C to +70%C

25.3.3.4. Switched Attenuator 0.25W, 0 - 15dB (10-000901)

In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive.

Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the

gain.

10-000901 provides attenuation from 0 - 15dB in 2 dB steps The attenuation is simply set using the

four miniature toggle switches on the top of each unit. Each switch is clearly marked with the

attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are

designed to maintain an accurate 50Ω impedance over their operating frequency at both input and

output.

10-000901 Specification

PARAMETER SPECIFICATION

Attenuation Values 0-15dB

Attenuation Steps 1, 2, 4 and 8dB

Power Handling 0.25 Watt

Attenuation Accuracy ± 1.0 dB

Frequency Range DC to 1GHz

Impedance 50Ω

Connectors SMA

VSWR 1.3:1

Weigh 0.2kg

operation -20°C to +60°C Temperature

range

storage -40°C to +70°C