INSTRUCTION MANUAL
MODEL 5089 Downconverter
Data, drawings, and other material contained herein are proprietary to Cross Technologies,
Inc., and may not be reproduced or duplicated in any form without the prior permission of
Cross Technologies, Inc.
When ordering parts from Cross Technologies, Inc., be sure to include the equipment model
number, equipment serial number, and a description of the part.
First Edition, December 2001 Rev 0
CROSS TECHNOLOGIES, INC.
6170 SHILOH ROAD
ALPHARETTA, GEORGIA 30005
(770) 886-8005
FAX (770) 886-7964
WEB www.crosstechnologies.com
E-MAIL [email protected]
INSTRUCTION MANUAL
MODEL 5089 Downconverter
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 I/O’s, Level Control ...........................6
2.3 Front Panel Controls, Indicators....................6
2.4 Operation.................................................7
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]
5089 Manual, Rev. 0 Page 2 12/17/01
MODEL 5089 Downconverter
SECTION 1 GENERAL
1.1 Equipment Description- The Series 5089 5 GHz Downconverters convert 5 GHz to IF with no
spectrum inversion and flat frequency response. For the 5089-07, the 5.30 GHz input is mixed with synthesized
local oscillator (LO) signals, first to 1500 MHz and finally to 70 MHz IF. The 5089-17 has a 170 MHz IF output
and 5.725 to 5.825 GHz input frequency. Other frequencies can be provided. Front panel LEDs indicate DC
power is applied (green) and if a PLL alarm occurs (red). The gain is 10 dB. Connectors are type N female for the
RF input and type F female for the IF output. The 5089 Converters are housed in an 1 3/4” X 19 “ X 14 “ deep
rack mount chassis.
The 5089 consists of two RF Assemblies and one Controller/LO PCB housed in a 1 RU (1 3/4 inch high)
by 12 inch deep chassis. A switching, ± 15 VDC power supply provides power for the assemblies.
MODEL 5089
DOWNCONVERTER
CROSS TECHNOLOGIES INC.
DC
100MHz
FREQUENCY
10MHz
1MHz
GHz
ALARM
FRONT PANEL
AC IN
GND
J102
RF IN
J101
IF OUT
GAIN
R101
REAR PANEL
Figure 1.1 Model 5089 Front and Rear Panels
70
MHz
OUT
5250
to
5350
MHz
IN
25 MHz
XTAL
Reference
1500 MHz BP
1430
MHz
5089-07 Downconverter Block Diagram
3800
MHz
5300 MHz BP 250 MHz LP
170
MHz
OUT
5725
to
5825
MHz
IN
25 MHz
XTAL
Reference
1500 MHz BP
1330
MHz
5089-17 Downconverter Block Diagram
4275
MHz
5775 MHz BP 250 MHz LP
Figure 1.2 Model 5089 Downconverter Block Diagrams
5089 Manual, Rev. 0 Page 3 12/17/01
1.2 Technical Characteristics
TABLE 1.0 5089 Downconverter SPECIFICATIONS*
Input Characteristics
Impedance/RL 50 Ω/10 dB
Frequency 5089-07 5300 ± 20 MHZ
Frequency 5089-17 5775 ± 50 MHZ
Noise Figure, Max. 15 dB
Input Level range -25 to -45 dBm
Input 1 dB/3RD ORDER -15 / -5 dBm
Output Characteristics
Impedance/RL 75 Ω /15 dB
Frequency 5089-07 70 ± 20 MHZ
Frequency 5089-17 170 ± 50 MHZ
Channel Characteristics
Gain 10 ± 1.0 dB
Image Rejection < -50 dBC
Frequency Response ± 1.0 dB, entire band; ± 0.5 dB, any 10 MHz increment
Synthesizer Characteristics
Frequency Accuracy ±10 kHz max over temp
Phase Noise (dBC/Hz) <= -70, 10 kHz; <=-90, 100 kHz; <=-100, 1 MHz
Controls
Frequency BDC Switches select input frequency in 1 MHz steps
Indicators
DC Power; PLL Alarm Green LED; Red LED
Other
IF; RF Connectors Type F, female; Type N, female
Size 19 inch standard chassis 1.75”high X 14.0” deep
Power 90 - 260 VAC, 47 - 63 Hz, 30 watts max.
Model Numbers
5089-07 70 MHz IF output and 5300 ± 20 MHZ intput
5089-17 170 MHz IF output and 5775 ± 50 MHz intput
Call for other frequencies
*+10 to +40 degrees C; Specifications subject to change without notice
5089 Manual, Rev. 0 Page 4 12/17/01
2.0 Installation
2.1 Mechanical - The 5089 consists of two RF Assemblies and one Controller/LO PCB housed in a 1 RU (1
3/4 inch high) by 12 inch deep chassis. A switching, ± 15 VDC power supply provides power for the assemblies.
The 5089 can be secured to a rack using the 4 holes on the front panel. Figure 2.0 shows how the 5089 is
assembled.
POWER
SUPPLY
RF
CONVERTER
IF
CONVERTER
CONTROLLER/
IF CONVERTER LO
FIGURE 2.0 5089 MECHANICAL ASSEMBLY
5089 Manual, Rev. 0 Page 5 12/17/01
2.2 Rear Panel Input/Output Signals and Level Control - Figure 2.1 shows the input and output
connectors on the rear panel.
AC IN
GND
J102
RF IN
J101
IF OUT
GAIN
R101
J102 - RF IN -
5 GHz RF INPUT.
50Ω, Type N, female
connector.
R101 - IF OUT Level
Adjustment - Ten turn
potentiometer that adjusts the
gain of the 5089. Set for +10
dB gain and can be adjusted
for +13 to -10 dB gain.
AC1,- POWER IN
AC input for
switching power
supply.
J101 - IF Output
- IF 70 MHz (-07) or
170 MHz (-17)
output. 75Ω, Type F,
Female input at -10
dBm max level.
FIGURE 2.1 5089 REAR PANEL I/Os and LEVEL CONTROL
2.3 Front Panel Controls and Indicators -The following are the front panel controls and indicators.
MODEL 5089
DOWNCONVERTER
DC
100MHz
FREQUENCY
10MHz 1MHz GHz
ALARM
DS1 - DC
Power LED -
Lights green
when DC
power is
present
SW1 to SW4 - Frequency
Select BCD Switches -
Select the desired input
frequency in GHz
DS2 -
Alarm LED
- Lights red
when PLL
comes out of
lock
FIGURE 2.2 5089 FRONT PANEL CONTROLS AND INDICATORS
5089 Manual, Rev. 0 Page 6 12/17/01
2.4 Installation / Operation -
2.4.1 Installing and Operating the 2005 -
1.) Connect a -25 to -45 dBm signal to RF In, J102 (Figure 2.1)
2.) Connect the IF OUT, J101, to the external equipment
3.) Set BCD switches SW1 to SW4 to the desired frequency.
4.) Connect 90- 260 VAC, 47 - 63 Hz to AC1 on the back panel.
5.) Be sure DS1 (green, DC Power) is on and DS2 (red, Alarm) is off (Figure 2.2).
6.) AC Fuse - The fuse is a 5 mm X 20 mm, 2 amp slow blow (Type T) and is inserted in the far slot in
the drawer below the AC input as shown in Figure 2.3. There is a spare fuse in the near slot. If a fuse
continues to open, the power supply is most likely defective.
2.4.2 Frequency Setting, SW1 to SW4 - The RF input frequency is selected by setting the BCD switches
(SW1 to SW4) on the front panel to the desired frequency using a small blade screwdriver. The frequency
displayed on the BCD switches is the desired input frequency with 70 (-07) or 170 MHz (-17) IF center frequency
output. If the switches are set to an invalid frequency, alarm LED DS2 will light.
FUSE DRAWER
SPARE FUSE DRAWER
AC Fuse - 2 amp slow blow (Type T),
5 mm X 20 mm
FIGURE 2.3 FUSE LOCATION AND SPARE FUSE
5089 Manual, Rev. 0 Page 7 12/17/01
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