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The option for AMA 310/UMS: 24-fold switch SW 024.

With the cluster switch SW 024 a measured ingress can be assigned precisely to the cluster from where it comes. This significantly facilitates the search for the source of an interferer.

KWS-Electronic 24-fold switch SW 024

The UMS system automatically ensures that a field device VAROS 107 displays the spectrum or the measurement results of exactly the one switch input where it is physically connected to.

In addition to the selective mode, the sum signal of all 24 RF inputs can be generated and monitored from a spectrum point of view.

Specifications RF switch SW 024:

Frequency range

USIN,i [i = 1…24]: 5–85 MHz
USOUT: 4.38–85 MHz
DSIN: 45–1,218 MHz

Interfaces

24 × USIN: F Socket/75 Ω  (IEC 60169-24)
1 × DSIN: F Socket/75 Ω  (IEC 60169-24)
1 × RFOUT: F Socket/75 Ω  (IEC 60169-24)
1 × USBIN: USB-B Jack; Protocol: KWS proprietary, not USB compliant

Upstream inputs

RF Level (nominal) – per Modem or Signaling Channel: 60–75 dBµV
RF Sum Level – per Upstream Input USIN,i: ≤ 90 dBµV

Transmission Loss – USIN,i → RFOUT: < 6.5 dB (up to 85 MHz)

Transmission Loss Sum Path – USIN,i → RFOUT: < 3.8 dB (up to 85 MHz)
Isolation – USIN,i → RFOUT: > 70 dB (up to 85 MHz)

Isolation – USIN,i → USIN,j: > 70 dB (up to 85 MHz)

Return Loss – USIN,i active: > 12 dB (up to 85 MHz)
Return Loss – USIN,i inactive: > 18 dB (up to 85 MHz)
External Voltage: < 70 Veff (DC/50 Hz)

Downstream input

Level (nominal) – per TV channel: ≤ 120 dBµV

Transmission Loss – DSIN → RFOUT
< 2.7 dB (up to 868 MHz)
< 3.1 dB (up to 1,002 MHz)
< 4.5 dB (up to 1,218 MHz)

Return Loss – DSIN activ
> 12 dB (up to 868 MHz)
> 12 dB (up to 1,002 MHz)
> 12 dB (up to 1,218 MHz)

Isolation – DSIN inactiv → RFOUT
> 75 dB (up to 204 MHz)
> 60 dB (up to 868 MHz)
> 56 dB (up to 1,002 MHz)
> 52 dB (up to 1,218 MHz)

RF Sum Power – DSIN: < 500 mW
External Voltage: < 70 Veff (DC/50 Hz)

RF output

Return Loss
> 12 dB (USIN,i aktiv)
> 12 dB (DSIN aktiv)

Mixer

Mixing of the signalization of the field units VAROS 107 in UMS measurement mode

Dual-Conversion Architecture
Input Frequency: 5–85 MHz
Intermediate Frequency (IF): 433.92 MHz
Target Frequency: 4.5 MHz
Mixer Bandwidth (-3 dB): 120 kHz

Miscellaneous

User Display: 26 × LED red / Power; USIN,1–USIN,24; DSIN

Power supply

Built-In primary Power Supply Unit

Mains connector: Plug in accordance with IEC-60320-C8
Mains Voltage: 100–120 VAC, 200–240 VAC, 50–60 Hz
Power consumption: max. 10 W

Environmental conditions

Operating Temperature: 0 °C to +45 °C
Storage Temperature: -10 °C to +55 °C
Humidity: 10 % to 90 % (non-condensing)

Electromagnetic compatibility

per EN 61326-1

Protection

per EN 61010-1

Dimensions

Width: 440 mm, Height: 44,45 mm, Depth: 275 mm (19”, 1 RU/without clamping angle)

Width: 483 mm, Height: 44,45 mm, Depth: 275 mm (19”, 1 RU/with clamping angle)

Weight

approx. 3.5 kg

Content of delivery

  • F patch cable (75 Ohm, to connect SW 024 to AMA 310/UMS)

  • USB patch cable (USB-B → USB-A, to connect SW 024 to AMA 310/UMS)

  • Power Cable

  • 2 pieces clamping angle for 19” rack mounting

  • 8 pieces M4 × 8 mm crosshead screws

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