Kathrein manual VOS 952-1G/953-1G DESCRIPTION, Data, House connection amplifiers, VGO 939-1G

VGO 939-1G/
VGF 939-1G		DATA
Technical Data
Type	VGO 939-1G VGF 939-1G	Notes

VOS 952-1G/953-1G DESCRIPTION

Order no.		24410101	24410100
		Locally fed	Remotely fed
FORWARD PATH
Frequency range	MHz	85-1000
Gain	dB	40
Gain setting range, interstage ³)	dB	32-40
Amplitude response	dB	±0.5		85-1000 MHz, at 25 °C
Amplitude response (additional, 862-1000 MHz)	dB	-0.5		at 25 °C
Attenuation setting range, on input ³)	dB	0-26
Pre-emphasis setting range, at input ³) or interstage	dB	0-26 or 0/4/8
Return loss, as of 40 MHz	dB	18-1.5/oct.
Noise figure	dB	4		at 40 dB gain
Max. operational level: CENELEC raster ¹)	dBµV	116/118		CTB: 60 dB/CSO: 60 dB (pre-emphasis 4 dB)
Hum modulation ratio	dB	-	60/70	AT 7 A, 5-65/85-1000 MHz
RETURN PATH
Frequency range	MHz	5-65
Gain (input stage bridged), active operation	dB	30 (21)
Gain, passive operation	dB	-2
Amplitude response	dB	0.5
Attenuation setting range, at input or interstage ³)	dB	0/4/8 or 0-16
Pre-emphasis setting range, interstage	dB	0/3/6
Ingress Control Switch (ICS)	dB	8/> 40		attenuated/switched-off
Max. output level at 30 and 21 dB gain	dBµV	107/116		60 dB IMod2/IMod3 (EN 60728-3/50083-5)
Max. output level	dBµV	120		According to KDG 1 TS 140 (full system load)
Input level density	dBµV/Hz	-8		CINR at 50 dB (EN 60728-3/item 4.7)
Dynamic range at 30 dB gain (5-65 MHz) ²)	dB	18
Dynamic range at 21 dB gain (5-65 MHz) ²)	dB	25
Noise figure	dB	6
NETWORK MANAGEMENT
Monitorable parameters		Internal voltage supply, internal current drain,
		internal temperature, ICS switch
Test sockets
Test socket 1 (on amplifier input), bi-directional	dB	20
				Possibility to feed in return path signals
Test socket 2 (on amplifier output), directional coupler	dB	20		(5-65 MHz); if button is kept pressed, the
				incoming return path signal can be measured
Test socket 3 (in return path amplifier), directional coupler	dB	10		Attenuation relative to return path input
SWITCHED-MODE POWER SUPPLY
Nominal input voltage	V AC	230	32-72
Mains frequency range	Hz	50-60
Max. remote feed current	A	-	7	per input or output
Max. remote feed current, local insertion	A	-	10
Power consumption (without monitoring)	W	17.5		Return path amplifier active
GENERAL
Classification according to KDG 1 TS 140		D(4.4)
Ambient temperature range	°C	-20 to +55		data-conform operation
RF connections		PG 11
Test sockets		F-type connector
Housing protection class (to EN 60529)		IP 54
Dimensions (W x H x D)	mm	238 × 86 × 189
Packing unit/weight	pc./kg	1(10)/2.2

VOS 952-1G/953-1G

•Latest GaAs-MMIC technology

•Innovative operational concept:

-Settings via slide switches

-Device settings can be reproduced exactly

-Fewer plug-in cards and variable attenuators needed

•Very high output level at lowest intermodula- tion products

•Built-in active return path with various setting possibilities

•15 MHz high pass can be activated in the return path

•Ingress Control Switch (ICS)

•Monitorable with HMS or DOCSIS (option)

•Insert position for additional functions in the forward path (e.g. de-emphasis)

•Bi-directional test socket on amplifier input with inductive coupling

•Directional coupler test socket on amplifier output and in return path

•Test signals can be coupled in for the return path

•Highly efficient switched-mode power supply unit

•VOS 952-1G - locally fed, F-type connectors

•VOS 953-1G - remotely fed (auto-supply), F-type sockets

•Surge absorbers on all RF connections and in switched-mode power supply unit

•Die-cast housing

•Test sockets: F-type sockets

House connection amplifiers

The compact, price-optimised house connection amplifiers 952-1G and VOS 953-1G were designed for application in modern HFC networks. Great value was set upon a high dynamic range for Interstage operation as well as upon a cost-efficient operation concept with slide switches.

Monitoring via DOCSIS transponder

If fitted with the optional monitoring transponder TVM 1000/H, the amplifiers VOS 952-1G/953-1G can be monitored via DOCSIS protocol. Monitoring with HMS Both amplifiers can be flexibly integrated into monitoring systems which operate with the widespread HMS protocol.

Bridgeable diplex filter

Bridging plugs enable variation of the frequency range between 47-1000 MHz and 85-1000 MHz making it possible to carry out transmission in BAND I in the forward path (without return path).

Flexible return path

In the latest generation, the return path can be operated either actively or passively.

1) CENELEC: 41 channels 2) When the 15 MHz high pass is connected, the dynamic range increases by 3 dB 3) Settable in 2-dB steps using slide switches

11