
Coaxial Protection


Application Example

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The CRITEC CSP
range of surge diverters offer economical and reliable protection
from transients on coaxial antenna RF feeders cables.
They are comprised of a leadless gas discharge tube (gas arrester)
housed in a chrome plated brass block. Careful design and precision
machining has allowed the match between the characteristic impedance
of the unit and the cable to be optimized. This attention to
detail has resulted in a unit capable of operating at typical
power and frequency levels of 1000W and 3GHz respectively, whilst
minimizing the insertion and return losses.
Features:
• Robust design • Simple plug-in installation
• CSP
models to suit N and BNC cable terminations • CSP bulkhead
N-type versions available • High impulse current rating (20kA
8/20µs) • Wide operating frequency spectrum
• Low insertion
and return loss • Mounting bracket and ground lead included
• CE approved |
Applications:
• Bulkhead mount • A convenient mechanical arrangement
for termination and protection of coaxial cables at a communication
site's point of entry • In-Line installation
• Generally
used for direct connection to the radio equipment antenna port,
or in line with the coaxial feed |
Notes: How
to Choose the Correct CSP For RF circuit protection the
CSP is available with a choice of two nominal clamping voltages.
The selection of the CSP unit is based on the peak transmitting
power of the communication circuit. From this, the peak circuit
voltage is calculated and the CSP with the next highest clamping
voltage is selected.
The formula is: Vpeak
= VSWR x 1.4 x Sqrt(50 x Transmit Power) Where VSWR is the
Voltage Standing Wave Ratio (use 1.5 if unsure) and Transmit
Power is in Watts.
If Vpeak <72V use CSPxxx90 If
Vpeak >72V & <480V use CSPxxx600
Ordering Information
|
Part No. |
Part No.
for Europe |
Description |
|
CSP NMF 90 |
700310 |
N-Type M
to F, 72-108V |
|
CSP NMF 600 |
700355 |
N-Type M
to F, 480-720V |
|
CSP BNC 90 |
700360 |
BNC-Type
M to F, 72-108V |
|
CSP BNC 600 |
700405 |
BNC-Type
M to F, 480-720V |
|
CSP NB 90 |
700410 |
Bulkhead
N-Type F to F, 72-108V |
|
CSP NB 600 |
700455 |
Bulkhead
N-Type F to F, 480-720 |
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