Kathrein VGO 939-1G/VGF 939-1G VGO 939-1G VGF 939-1G, Simple, yet effective, Maximum reliability

VGP 9033-1G/9041
VGF 9030/9040	DATA
Technical Data

VGO 939-1G/
VGF 939-1G	DESCRIPTION

Type		VGF 9030		VGF 9040			VGP 9033-1G	VGP 9041
Order no.		24410108		24410109			24410103	24410054
FORWARD PATH
Frequency range	MHz	85-862		85-862			85-1000	85-862
Gain (at 1000 MHz)	dB	33		40			33	40
Return loss	dB			19-1.5 dB/oct.
Frequency response (85-1000 MHz at 25 °C)	dB				± 0.5
Max. output level according to CENELEC 1) - CTB > 60 dB	dBµV				114
Max. output level to CENELEC 1) - CSO > 60 dB	dBµV				116
Attenuation range, electronically settable in 0.5 dB steps 5)	dB	0-16				0-15		0-16
Slope range, electronically settable in 0.5 dB steps 5)	dB	0-20			0-15			0-20
Interstage attenuation, settable in 1 dB steps		-				0-5		-
Interstage pre-emphasis, electronically settable in 2.5 dB steps	dB	2-9				2,5-10		2-9
Noise figure at minimum pre-emphasis	dB	6				6.5		6
Adjustment range, sloped at 85 MHz	dB	-				± 2
Adjustment range, parallel	dB	-				± 3
Frequency range lower pilot Pu ²)	MHz	85-230				85-230		82.5-230
Frequency range upper pilot Po ²)	MHz	570-870				570-870 5)
Pilot level (PAL/CW/QAM)	dBµV				83-112
Hum modulation ratio at 7 A	dB	70				> 67		70
RETURN PATH
Frequency range	MHz				5-65
Gain	dB	30				28		30
Frequency response at 25 °C	dB	± 0.5				± 0.3		± 0.5
Input level density (CINR = 50 dB), at 28 dB gain 6)	dBµV/Hz				-9
Dynamic range: CINR > 50 dB, 5-65 MHz, at 28 dB gain 6)	dB				21
Dynamic range: CINR > 50 dB, 5-65 MHz, at 18 dB gain 7)	dB				26
Noise figure	dB				6
Attenuation, switchable in 1 dB steps	dB				0-30
Slope, switchable in 7 steps	dB				1-8
ICS switch (attenuation switchable over EMS or	dB				0/6/> 45
HTE 10 hand-held unit)
Hum modulation ratio at 7 A/> 15 MHz	dB				60
GENERAL
Voltage supply	V AC				30-72
Power consumption	W	21				23
Max. remote feed current per connection	A				7
Max. remote feed current in local feeding (power passing)	A				10
RF connections					PG 11
Housing protection category		IP 54					IP 67
Ambient temperature range	°C				-20 to +55
Screening factor				Conforms to CENELEC EN 50083-2
Overvoltage protection acc. to IEC 60-2				2 kV (1.2/50 µs)
Dimensions (W x H x D)	mm			240 × 95 × 240 3)
NETWORK MANAGEMENT (optional)
		Operational voltage; current; temperature; electronic tuning elements; pilot setting and
Monitorable/settable parameters		alarm; automatic levelling of forward path; automatic presetting of return path; return
			path gain; ICS switch; remote inventory data

1) 9 dB slope2) Set using HTE 10 hand-held unit 3) Width incl. hinges: 267 mm 4) As of device version Bxx from 570-870 MHz 5) For VGP 9033-1G in 1 dB steps

 6) For VGF 90xx at 30 dB gain 7) For VGF 90xx at 20 dB gain

VGO 939-1G/VGF 939-1G

•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

•Integrated diplexers allow optimised data

•Very high output level at lowest intermodulation products (also for interstage attenuation)

•Pluggable loop-through output

•One or two output(s) configurable

•Built-in active return path with various setting possibilities

•Return path can also be operated passively

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

•Ingress Control Switch (ICS)

•Monitorable with HMS or DOCSIS transponder (option)

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

•Bi-directional test socket on the amplifier input

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

•Test signals can be coupled in for the return path

•LED as function indicator

•Highly efficient switched-mode power supply unit

•Advanced remote power concept in the VGF 939-1G:

-Newly developed remote feed coils

-Remote feed current: Max. 7 A per connec- tion, local insertion max. 10 A totally

-Remote feeding possibilities: By choice via all RF connections or local connector (power passing)

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

•Power management: Unused amplifier stage switch-off for reduced power consumption

•Die-cast housing with PG 11 connectors

•Easy connection of large cable fittings due to extended thread distance

•Outdoor operation possible, housing protection class: IP 54

•Test sockets: F-type connectors (internal)

The compact amplifier with slide switches –

VGO 939-1G/VGF 939-1G

In addition to the devices with electronic setting, Kathrein offers yet another highly innovative compact amplifier platform. This particularly economical series requires no equaliser cards

or attenuation pads. All adjustments can be easily carried out using slide switches.

Simple, yet effective

The required attenuation and slope values are set with a combination of several slide switches. The advantages are obvious. Besides saving plug-in cards, this allows exact reproduction of setting values without requiring a measuring instrument.

Replacement of the device, for example, is thus much easier.

When slide switches are shifted, a virtually uninter- rupted signal flow is guaranteed – multimedia services remain undisturbed.

Maximum reliability

The implemented slide switches fulfil the highest demands regarding reliability and endurance. Dual gold-plated contact reeds, increased contact pressure and a separate catch spring ensure ultimate reliability of the switches, which have been proven and tested 100,000 times.