MODEL 4116-285-2450 Block Downconverter, Weather Resistant
1.0 General
1.1 Equipment Description
The 4116-285-2450 Block Downconverter converts 28.5 - 30.0 GHz to 0.95 - 2.45 GHz. Front panel LEDs
indicate DC Power and PLL Alarms. The RF to L-band gain is +30 ± 3 dB maximum at Fc and is adjustable in
0.5 ± 0.5 dB steps. Connectors are 2.92 mm for RF In, RF Monitor and SMA for the external reference input
and output, and Type N, female for L-band out. Gain and internal 10 MHz frequency are controlled by the
Ethernet M&C. In AUTO, the 10 MHz reference stays in external if the external level is in the +2 to +8 dBm
range. The unit is powered by a 100-400 ±10% VAC power supply, and is mounted in a 8”W X 6”H X 16”D
Weather Resistant* enclosure.
NOTE:
*Weather Resistant enclosures are designed to be water resistant for installation in an outdoor enclosure/antenna hut OR mounted
outdoors on an antenna assembly at their specified temperature ranges. They are designed to be located “out in the elements” (water, sleet, snow,
etc.) but they are not designed to be “submerged under water”. If an extended temperature range is required, there is an Extended Temperature
Option (Option W21; -30˚C to +60˚C) available at an additional cost. Contact Cross for quote.
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L-BAND OUT
J9
10M IN
STATUS /
CONTROL
ETHERNET
POWER
ALARM
J3
J4
10M OUT
FUSE
J8
AC IN
J7
F1
RF INPUT
J1
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J6
C
ROSS
T
ECHNOLOGIES INC.
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MODEL 4116 Downconverter
RF MON
J2
.
Model 4116-285-2450 Block Downconverter, Front Panel
0.95 -
2.45
GHz
OUT
EXT
10 M
10 M
TO
PLLS
S
P
L
I
T
28.5 - 30.0
GHz BP
27.55
GHz
SW,PLL,ATT,VCC CONTROL
M&C
CONTROLLER
10 M
MON
2.450 GHz
LP
28.5 -
30.0
GHz
IN
V
A
R
A
T
T
0 dB
RF
MON
I
S
O
L
4116-285-2450
Downconverter
Block Diagram
(**Shown with W74M KA
0 dB Input Monitor )
- OPTION W74MKA
FIGURE 1. Model 4116-285-2450 Block Downconverter, Block Diagram
4116-285-2450 Manual, Rev. 0
Page 3
02/11/21
