Instruction Manual
Model 2082-1848
DC Power Supply
July 2012, Rev. A
MODEL 2082
CROSS TECHNOLOGIES INC.
POWER SUPPLY
LNB
POWER
SSPB
DC
SSPB
POWER
GND
LNB
DC
POWER
OFF
ON
LNB POWER
OFF
ON
SSPB POWER
TEST POINTS
Data, drawings, and other material contained herein are proprietary to Cross Technologies, Inc.,
but may be reproduced or duplicated without the prior permission of Cross Technologies, Inc.
for purposes of operating the equipment.
When ordering parts from Cross Technologies, Inc., be sure to include the equipment
model number, equipment serial number, and a description of the part.
CROSS TECHNOLOGIES, INC.
6170 Shiloh Road
Alpharetta, Georgia 30005
(770) 886-8005
FAX (770) 886-7964
Toll Free 888-900-5588
WEB www.crosstechnologies.com
E-MAIL [email protected]
INSTRUCTION MANUAL
MODEL 2082-1848 DC Power Supply
TABLE OF CONTENTS PAGE
Warranty 2
1.0 General 3
1.1 Equipment Description 3
1.2 Technical Characteristics 4
2.0 Installation 5
2.1 Mechanical 5
2.2 Rear Inputs, Outputs and Indicators 6
2.3 Front Controls and Indicators 6
2.4 Operation 7
3.0 Environmental Use Information 8
WARRANTY - The following warranty applies to all Cross Technologies, Inc. products.
All Cross Technologies, Inc. products are warranted against defective materials and
workmanship for a period of one year after shipment to customer. Cross Technologies,
Inc.’s obligation under this warranty is limited to repairing or, at Cross Technologies, Inc.’s
option, replacing parts, subassemblies, or entire assemblies. Cross Technologies, Inc. shall
not be liable for any special, indirect, or consequential damages. This warranty does not
cover parts or equipment which have been subject to misuse, negligence, or accident by the
customer during use. All shipping costs for warranty repairs will be prepaid by the
customer. There are not other warranties, express or implied, except as stated herein.
CROSS TECHNOLOGIES, INC.
6170 Shiloh Road
Alpharetta, Georgia 30005
(770) 886-8005
FAX (770) 886-7964
Toll Free 888-900-5588
WEB www.crosstechnologies.com
E-MAIL [email protected]
2082-1848 Manual_A Page 2 7/26/12
MODEL 2082-1848 DC Power Supply
1.0 General
1.1 Equipment Description
The 2082-1848 DC Power Supply is a DC voltage Power Supply used for SSPB and LNB applications. DC
Power is inserted via two L-Band loop-throughs. A +48 VDC, 5A output is provided on the SSPB “RF + DC”
output and a +18 VDC, 1A output is provided on the LNB “RF + DC” output. Two front panel locking toggle
switches allow the user to disable the DC power insertion on either or both outputs. Each DC power source is
fused using rear panel mount fuse holders. Front panel LEDs indicate AC power (green), and front panel
LED’s (green) and rear panel LEDs (yellow) indicate the presence of voltage on either RF1 or RF2. Connectors
are TNC female for both loop-throughs. The unit is powered by a 100-240 ±10% VAC, 47-63 Hz supply, and
housed in a 19.0”, 1RU x 1.75”H x 7.75”D chassis.
MODEL 2082
CROSS TECHNOLOGIES INC.
POWER SUPPLY
LNB
POWER
SSPB
DC
SSPB
POWER
GND
LNB
DC
POWER
OFF
ON
LNB POWER
OFF
ON
SSPB POWER
TEST POINTS
FRONT PANEL
GND
AC
J1
LNB
RF+DC
J2
RF OUTPUT
• • • • • • • • •
• • • • • • • • • ••
• • • • • • • • • ••
• • • • • • • • • ••
• • • • • • • • • ••
• • • • • • • • •
LNB
DC
DS1
F1
LNB
FUSE
F2
DS2
SSPB
DC
SSPB
FUSE
RF INPUT
SSPB
RF+DC
J3 J4
REAR PANEL
FIGURE 1.1 Front and Rear Panels
2082-1848 Manual_A Page 3 7/26/12
1.2 Technical Characteristics
± 1.0 dB, 950 - 2150 MHz; ± 0.5 dB, 36 MHz BW Frequency Response
± 5% Load Re
g
ulation
FP Green LEDs VDC on RF1/RF2
RP Yellow LEDs VDC on RF1/RF2
Green LEDs AC Power
(
PS1 and PS2
)
FP Test Points
(
10K Im
p
edance
)
PS1, PS2, Gnd
FP SPST Lockin
g
To
gg
le Switch PS2 On/Off
100-240 ±10% VAC, 47-63 Hz., 350W Power
*10˚C to 40˚C; Specifications subject to change without notice. Cross Technologies, Inc. 2012
(
Call for other connectors
)
19 inch, 1 RU, 1.75” Hi
g
h X 7.75” Dee
p
Size
— L-Band Insertion —
RF In
p
ut/Outout Characteristics
DC Power Characteristics
Chassis/Other - Controls
,
Indicators
Other
+48 VDC, 8 A, max.
(
Call for other volt
g
a
g
es
)
TABLE 1.1 2082-1848 DC Power Suppl
y
Equipment Specifications*
TNC, 50 Ω
(
female
)
RF Connectors
FP SPST Lockin
g
To
gg
le Switch PS1 On/Off
+18 VDC, 1 A, max. Volta
g
e/Current, PS2 / RF2
+48 VDC
,
5 A
,
max. Volta
g
e/Current
,
PS1 / RF1
1 ± 0.5 dB
(
L-Band
)
; 1 dB max.
(
10 MHz
)
Insertion Loss
950 to 2150 MHz Fre
q
uenc
y
50Ω / 10 dB minimum Impedance/Return Loss
2082-1848 Manual_A Page 4 7/26/12
2.0 Installation
2.1 Mechanical
The 2082-1848 consists of one RF PCB housed in a 19.0”, 1 RU, X 1.75” high X 7.75” deep chassis. A +48
VDC, 5A output (SSPB) is provided on the “RF1 + DC” output and a +18 VDC, 1A output (LNB) is provided
on the “RF2 + DC” output. Two front panel locking toggle switches allow the user to disable the DC power
insertion on either or both outputs. The 2082-1848 can be secured to a rack using the 4 holes on the front panel.
Figure 2.0 shows how the 2082-1848 is assembled.
J16
(FROM POWER
SUPPLY
2
)
POWER
SUPPLY 2
(+48VDC)
POWER
SUPPLY 1
(+18VDC)
J12
(FROM POWER
SUPPLY
1
)
FIGURE 2.1 Mechanical Assembly
2082-1848 Manual_A Page 5 7/26/12
2.2 Rear Panel Inputs, Outputs, and Indicators
Figure 2.2 shows the input and output signals and indicators on the rear panel.
AC
GND
AC INPUT
AC power for power
supplies 1 and 2.
COOLING FAN
Intake fan that provides
cooling to the power supplies.
COOLING FAN
Intake fan that provides cooling
to the power supplies.
+18VDC FUSE (1A fast-blo)
To insert DC at J2
J1 - RF1 INPUT
LNB RF without DC
J2 - RF1 LNB, RF+DC
RF signal (950-2150MHz) with +18 VDC and TNC,
50Ω (Female) and 10MHz ref pass through
J3 - RF2 INPUT
Uplink RF input without DC
J4 - SSPB
RF signal (950-2150MHz)
with +48 VDC and TNC,
50Ω (female) 10 MHz ref pass through
J1
RF OUTPUT
J2
• • • • • • • • •
• • • • • • • • • ••
• • • • • • • • • ••
• • • • • • • • • ••
• • • • • • • • • ••
• • • • • • • • •
LNB
DC
DS1
F1
LNB
FUSE
F2
DS2
SSPB
DC
SSPB
FUSE
RF INPUT
SSPB
RF+DC
J3 J4
LNB
RF+DC
EXHAUST Vent
Do Not Block
+48VDC FUSE (5A fast-blo)
To insert DC at J4
FIGURE 2.2 Rear Panel Outputs
2.3 Front Panel Controls and Indicators
Figure 2.3 shows the front panel controls and indicators.
PS1 ON/OFF TOGGLE SWITCH
FP SPST Locking Toggle switch
SSPB OUTPUT
+48 VDC, 5A output indicator
RF1 + DC
PS2 ON/OFF TOGGLE SWITCH
FP LNB Locking Toggle switch
LNB OUTPUT
+18 VDC, 1A output indicator
RF2 + DC
MODEL 2082
CROSS TECHNOLOGIES INC.
POWER SUPPLY
LNB
POWER
SSPB
DC
SSPB
POWER
GND
LNB
DC
POWER
OFF
ON
LNB POWER
OFF
ON
SSPB POWER
TEST POINTS
Voltage Test Points
FIGURE 2.3 Front Panel Controls and Indicators
2082-1848 Manual_A Page 6 7/26/12
2.4 Installation / Operation
2.4.1 Installing and Operating the 2082-1848 DC Power Supply
1. Connect 950-2150 MHz receiver equipment to RF1 OUT, J1 (Fig. 2.2).
2. Connect RF1+DC OUT, J2, to LNB (Fig. 2.2).
3. Connect RF2 +48VDC, J4, to SSPB (Fig. 2.2).
4. Connect J3 RF Input to uplink signal +10 MHz source.
5. Enable FP LNB Power Switch if +18VDC, 1.0A max. is to be inserted on J2 (Fig. 2.2).
6. Enable FP SSPB Power Switch if +48 VDC, 5A max. is to be inserted on J4 (Fig. 2.2)
7. Connect 100-240 ±10% VAC, 47 - 63 Hz to AC connector on the rear panel (Fig. 2.2).
8. Be sure DS3 (PS DC, green) is on (Fig. 2.3).
9. Monitor PS1 and PS2 voltage levels using provided test points (Fig. 2.3).
10.
AC Fuses - The fuse is a 5 mm x 20 mm, 5 amp slow-blow (Type T) and is inserted in the far slot in
the drawer below the AC input as shown in Figure 2.4. There is a spare fuse in the near slot.
If a fuse continues to open, the power supply is most likely defective.
AC Fuse - 2 amp slow blow (Type T),
5 mm X 20 mm
FUSE DRAWER
SPARE FUSE
~
INPUT
100-240± 10%VA
C
47-63 Hz
2A MA
X
FUSE
TYPE T 2A GDC
250 VOLT
FOR 100 - 240 V~
~
FIGURE 2.4 Fuse Location and Spare Fuse
2082-1848 Manual_A Page 7 7/26/12
3.0 Environmental Use Information
A. Rack-Mounting - To mount this equipment in a rack, please refer to the installation instructions
located in the user manual furnished by the manufacturer of your equipment rack.
B. Mechanical Loading - Mounting of equipment in a rack should be such that a hazardous condition
does not exist due to uneven weight distribution.
C. Elevated Operating Ambient Temperature - If installed in a closed or multi-unit rack assembly,
the operating ambient temperature of the rack may be greater than room ambient temperature.
Therefore, consideration should be given to Tmra.
D. Reduced Air Flow - Installation of the equipment in a rack should be such that the amount of air flow
required for safe operation of the equipment is not compromised. Additional space between units
may be required.
E. Circuit Overloading - Consideration should be given to the connection of the equipment to the supply
circuit and the effect that overloading of circuits could have on over current protection and supply wiring.
Appropriate consideration of equipment name plate rating should be used when addressing this concern.
F. Reliable Earthing - Reliable earthing of rack-mounted equipment should be maintained.
Particular attention should be given to supply connections other than direct connection to the
Branch (use of power strips).
G. Top Cover - There are no serviceable parts inside the product so, the Top Cover should not be removed.
If the Top Cover is removed the ground strap and associated screw MUST BE REINSTALLED
prior to Top Cover screw replacement. FAILURE TO DO this may cause INGRESS and/or EGRESS
emission problems.
2082-1848 Manual_A Page 8 7/26/12
CROSS TECHNOLOGIES, INC.
6170 Shiloh Road
Alpharetta, Georgia 30005
(770) 886-8005
FAX (770) 886-7964
Toll Free 888-900-5588
WEB www.crosstechnologies.com
E-MAIL [email protected]
Printed in USA
2082-1848 Manual_A Page 9 7/26/12
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