Technical 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