MODEL 284-19 RF Splitter
1.0 General
1.1 Equipment Description - The Model 284-19 is a nine way, 0.95 - 2.1 GHz, 0 dB gain splitter in a 4.7”W x
1.75”H x 6.5”D bench top chassis (or mounted on an optional 1 Rack Unit panel) with a 115 VAC wall power
supply. The splitter provides fused DC power insertion on the RF input connector center pin, surge protection,
and excellent RF characteristics. The splitter has a monitor connector on the front panel and eight outputs on the
back panel. The 115 VAC wall power supply provides a +18 VDC voltage for internal amplifiers and for DC to
power an external amplifier (often Low Noise Block converters or LNBs) through a DC power inserter. The
LNB power line is separately fused. A surge suppressor on the splitter input protects against high voltage
transients. All splitter outputs are AC coupled so no DC appears on their center conductors. On the front panel,
a green LED indicates the presence of +18 VDC at the LNB power supply output and DC voltage test points
allow monitoring this voltage with a voltmeter. Presence of power from the +18 VDC wall power supply is
shown by the green AC Power LED. Up to three 284’s can be mounted on an optional 1 3/4”x 19” rack mount
panel (option R1, R2, or R3).
C
ROSS
T
ECHNOLOGIES, INC.
284 SPLITTER
+DC
GND
ON
RF MONITOR
LNB VOLTAGE
ON
POWER
FRONT
REAR
IN J9
C
ROSS
T
ECHNOLOGIES, INC.
OUT J8 OUT J7 OUT J6 OUT J5
DC
J12
LNB FUSE F1
OUT J1 OUT J2 OUT J3 OUT J4
FIGURE 1.1 MODEL 284-19 FRONT AND REAR PANELS
C
ROSS
T
ECHNOLOGIES, INC.
284 SPLITTER
+DC
GND
ON
RF MONITOR
LNB VOLTAGE
ON
POWER
C
ROSS
T
ECHNOLOGIES, INC.
284 SPLITTER
+DC
GND
ON
RF MONITOR
LNB VOLTAGE
ON
POWER
C
ROSS
T
ECHNOLOGIES, INC.
284 SPLITTER
+DC
GND
ON
RF MONITOR
LNB VOLTAGE
ON
POWER
FIGURE 1.2 THREE 284s MOUNTED ON OPTIONAL -R3 RACK PANEL
AMP
DC
INS
SURGE
SUP-
PRESOR
FUSE
9 WAY
SPLIT
OUT 1
OUT 2
:OUT3
OUT 8
MON
LNB PWR LED
1 - 2
GHz
IN
1 - 2 GHz OUT
LNB PWR TP
FIGURE 1.3 MODEL 284-19 RF SPLITTER BLOCK DIAGRAM
284-19 Manual, Rev A
Page 3
07/27/09
