Cross Technologies 2097 User manual

INSTRUCTION MANUAL
MODEL 2097 AMPLIFIER
CROSS TECHNOLOGIES, INC.
6170 SHILOH ROAD
ALPHARETTA, GEORGIA 30005
[phone]
FAX [phone]
WEB www.crosstechnologies.com
E-MAIL [email protected]
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. as required for normal
operation of 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.
First Edition, MARCH 2003 REV 0

INSTRUCTION MANUAL
MODEL 2097 AMPLIFIER
TABLE OF CONTENTS PAGE
Warranty ..............................................2
1.0 General.................................................3
1.1 Equipment Description..........................3
1.2 Technical Characteristics........................3
2.0 Installation ............................................4
2.1 Mechanical .......................................4
2.1.1 Cleaning Instructions ...................4
2.2 Controls and Indicators..........................4
2.3 Input / Output Signals ..........................4
2.4 Accessing the PC Card..........................4
2.5 Installation / Operation..........................5
2.5.1 Installing and Operating the 2097......5
2.5.2 AGC voltage relating to Gain...........6
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.’ 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
[phone]
FAX [phone]
WEB www.crosstechnologies.com
E-MAIL [email protected]
2097 manual Rev 0 Page 2 3/13/03

MODEL 2097 AMPLIFIER
SECTION 1 GENERAL
1.1 Equipment Description- The 2097-07 IF Amplifier provides automatic Gain Control for a 50 to 100 MHz IF signal for
a -80 to 0 dBm input level to a -35 dBm ± 10 dB output. The 2097-07 has a band limiting lowpass filter and automatic gain
(AGC) or manual gain (MGC) for a -80 to 0 dBm input range. The 2097-07 is powered by a 120 VAC, 60Hz, wall power
supply and is housed in an 4.7” wide X 1.75” high X 12.5” deep aluminum chassis. Option -R provides 1 3/4” X 19 “ rack
mount panel. Option -C has no power supply for use with a Series 2000 Power Supply.
FIGURE 1.1 2097 AMPLIFIER Block Diagram and Chassis
2087 DOWNCONVERTER
CROSS TECHNOLOGIES, INC.
DC ALARM
GND AGC
MGC
MGC AGC
50
to
100
MHz
IN
IF
Out
ATT
2097-07 IF AMPLIFIER Block Diagram
200 MHz
IF LP
ATT
AGC CONTROL
2097 AMPLIFIER
1.2 Technical Characteristics
TABLE 1.0 2097 AMPLIFIER SPECIFICATIONS*
Input Characteristics
Impedance/RL 50Ω/10 dB
Frequency 50 to 100 MHz
Input Level range 0 to -80 dBm
Input 1 dB +5 dBm
Output Characteristics
Output Impedance/RL 50 Ω/18 dB
Output Level -35 ± 10 dB
Channel Characteristics
Gain -35 to +35, AGC
Frequency Response ± 1.0 dB, ± 18 MHz
Group Delay, max ± 5 ns, max 50 to 100 MHz
Controls/Indicators
MGC/AGC; MGC Pot Switches between Manual (MGC) or Automatic (AGC) Gain control; Pot controls manual
gain
DC Power Green LED
OtherIF, RF Connectors BNC, female
Size, Bench Top 4.7” wide X 1.75” high X 8.5” deep
Size, Rack Mount (-R) 19 inch standard chassis 1.75”high X 9.0” deep (Optional)
Power 120 ± 10% VAC, 60Hz, 20 watts max, wall mount power supply
Model Numbers
2097-07 wall power supply
2097-07R wall power supply, rack mount
2097-07C no power supply, use with 2000-01 power supply
*+10 to +40 degrees C; Specifications subject to change without notice
2097 manual Rev 0 Page 3 3/13/03

2.0 Installation
2.1 Mechanical - The 2097 is packaged in an aluminum extrusion. The -R option is mounted on a 1 3/4” X 19” panel that
can be mounted to a rack using the 4 holes at the ends. Both units derive +DC from the wall power supply (option -P) (+15V
unregulated). See Figure 2.1. Optionally, the 2097, option -C is powered from an external +15 VDC power supply like the Cross
model 2000-01.
2.1.1 Cleaning Instructions - Wipe the exterior with a dry, soft cloth. Use no detergent or cleaning chemicals.
2.2 Controls and Indicators - Figure 2.2 shows front panel controls and indicators.
2.3 Input / Output Signals - Figure 2.3 shows the input and output signals to the 2097.
2.4 Accessing the PC Card - There are NO USER JUMPERS or other on-card controls. ALTHOUGH IT IS NOT
RECOMMENDED AND MAY VOID THE WARRANTY the following shows how to remove the printed circuit board (PCB)
from the extrusion:
1.) Always remove power when installing or removing the PCB from the extrusion
2.) Remove four (4) rear panel screws (see Figure 2.1). Remove any other screws on the extrusion.
3.) Gently pull the rear panel and PCB assembly completely out of the extrusion.
4.) To install the PCBgently push the rear panel and PCB assembly completely into the extrusion Make sure the shield
goes in the lower channel and the PCB in the next channel above that in the extrusion and that the front panel controls go through
the front panel holes.
5.) Install four (4) rear panel screws. Install any other screws on the extrusion.
2097 manual Rev 0 Page 4 3/13/03
IF LVL REM GAIN ALARM FREQUENCY (GHZ) TUNE
81. 3 3
2004 TEST UPCONVERTER
CROSS TECHNOLOGIES, INC.
-25 -45 -65 UP DOWN
FIGURE 2.1 SERIES 2000 ASSEMBLY DRAWING
EXTRUSION
BACKPLANE
REAR SCREWS (4EA)
FRONT SCREWS (4EA)
FRONT PANEL
RACK MOUNT PANEL (FOR -R MODELS ONLY)
PCB ASSEMBLY
WALL
POWER
SUPPLY

S1 - AGC/MGC Select - Slide switch selects
Manual (MGC) or Automatic (AGC) gain control. In
MGC use R40 to adjust the gain.
FIGURE 2.2 2097 Front Panel Controls and Indicators
R40 - Manual
Gain Control -
Multi-turn
potentiometer
adjusts the gain in
the manual gain
(MGC) mode.
Clock-wise
increases gain
TP3, TP4 Gain Control Voltage - DC
Voltage from 0 to -2 volts, 1K impedance,
increases as the gain increases in AGC only
DS2 - DC Power LED -
Lights green when DC
power is present
2097 AMPLIFIER
CROSS TECHNOLOGIES, INC.
DC
GND AGC
MGC
AGC MGC
FIGURE 2.3 2097 Inputs and Outputs
J2 - IF Output -
The IF 70 MHz
output . This is a
50Ω, BNC output at
-35 dBm level. The
gain is automatically
adjusted in AGC to
-35 dBm output and
by R40 in MGC.
J3 - DC POWER - The +15 VDC unregulated
DC voltage from the wall power supply
J1 - 70 MHz IN
- The 70 MHz IF
input. This is at a 0
to -80 dBm level.
This is a 50Ω,
BNC, female
connector.
GND +15 CROSS TECHNOLOGIES, INC.
70 MHZ IN DC 70 MHZ
OUT
2.5 Installation / Operation -
2.5.1 Installing and Operating the 2097 -
1.) Check that S1 is set to the desired position. Normal operation is AGC (Figure 2.2)
2.) If using the wall power supply, connect it to the 2097 and the wall power supply to 115 VAC, 60 Hz (Figure 2.1)
3.) Connect a 0 to -80 dBm signal to 70 MHz IF In, J1 (Figure 2.1, Figure 2.3)
4.) Connect the IF OUT, J2, to the external device
5.) Be sure DS2 (green, DC Power) is on (Figure 2.2).
6.) To check proper operation and adequate signal level, monitor TP3, TP4 with a voltmeter.
2097 manual Rev 0 Page 5 3/13/03

2.5.2 AGC voltage relating to Gain - The 2097 operates over a 0 to -80 dBm input. In Automatic Gain Control (AGC)
(with S1 to AGC), the gain is adjusted automatically to provide a constant -35 ± 10 dBm output level over the entire 0 to -80 dBm
input. In Manual Gain Control (MGC) (with S1 to MGC) the gain is adjusted by potentiometer R40 on the front panel. Test
points TP3 and TP4 can be monitored to determine the approximate gain and the approximate input level in AGC as the following
table shows. This voltage is not available in MGC.
A B C D
TABLE 2.1 2097 AGC Voltage and Gain and Input Level Information
TABLE 2.1 2097 AGC Voltage and Gain and Input Level Information
TABLE 2.1 2097 AGC Voltage and Gain and Input Level Information
AGC Monitor DC Volts AGC Gain AGC'd Input Level (dBm)
<-3 >40 -80
-2.17 35 -70
-1.9 25 -60
-1.65 15 -50
-1.37 5 -40
-1.01 -5 -30
-0.55 -15 -20
0.02 -25 -10
0.59 -35 0
2097 manual Rev 0 Page 6 3/13/03