Model 1200-05 - Cross Technologies, Inc.

Model 1200-05
Instruction Manual
IF Processor
October 2010, Rev. 0
RX
IF MON
J1
DIG1
FDM
DIG2
ON
ON
DIG1
SW1
FDM
SW2
ON
LOCAL
DIG2 REMOTE
SW3
SW4
MODEL 1200
TX
IF MON
IF PROCESSOR
GAIN
R1
LOCAL OVERRIDE
R2
R3
T1
CROSS TECHNOLOGIES, INC.
T2
T3
J2
DC
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 info@crosstechnologies.com
INSTRUCTION MANUAL
1200-05 IF Processor, Filtered AGC Detection, 70 ±0.2 MHz
TABLE OF CONTENTS
Warranty
1.0 General
1.1 Equipment Description
1.2 Technical Characteristics
2.0 Installation
2.1 Mechanical
2.2 Rear I/O’s, Control
2.3 Front Panel I/O’s, Indicators
2.4 Operation
1.3 Environmental Use Information
PAGE
2
3
3
4
5
5
6
6
7
9
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 info@crosstechnologies.com
1200-05 Manual, Rev. 0
Page 2
10/14/10
1200-05 IF Processor, Filtered AGC Detection, 70 ±0.2 MHz
1.0 General
1.1 Equipment Description - The 1200-05 IF Processor has a transmit and receive side. The receive side signal passes through an
Automatic Gain Control (AGC) amplifier (using a narrow SAW filter prior to the AGC detection circuitry so only energy at 70 ±0.2 MHz
automatically controls the gain; if there is no energy in this region it will go to max gain in AGC). The output is split into three signals each
having variable attenuators to adjust levels via front panel multi-turn potentiometers. The AGC amplifier adjusts a -95 to -15 dBm,
50 to 90 MHz IF input signal to a -30 dBm, +5, -15 dB output. A front panel connector provides a monitor signal directly out of the AGC
amplifier, and front panel potentiometers adjust the attenuation (between 0 and 20 dB) to each of the three output signals, DIG1RX, FDMRX,
and DIG2RX.
The transmit side has three transmit IF signals combined into one. DIG1TX, FDMTX, and DIG2TX signals each pass through individual
attenuators controlled via front panel potentiometers and a switch that is controlled remotely through a DB9 connector or locally with three SPDT
switches located on the front panel. A SPDT switch on the front panel selects either REMOTE or LOCAL operation. A local override feature is
included such that when the REMOTE/LOCAL switch is left in the LOCAL position, the override
pin on the DB9 can be set to override the LOCAL control and allow for REMOTE control.
DIG1 and DIG2 on both transmit and receive sides are 75Ω in/out while FDM on both transmit and receive sides are 50Ω in/out.
When power is removed from the 1200-05, the FDM TX and FDMRX signals pass through to the output. IF connectors are TNC female. The
1200-05 is housed in a 1RU x 14” deep chassis and powered by a 100-240 ±10% VAC, 47-63 HZ input power supply.
RX
IF MON
J1
DIG1
FDM
DIG2
ON
ON
DIG1
SW1
FDM
SW2
ON
DIG2 REMOTE
SW3
SW4
MODEL 1200
TX
IF MON
LOCAL
IF PROCESSOR
GAIN
R1
LOCAL OVERRIDE
R2
R3
CROSS TECHNOLOGIES, INC.
T1
T2
J2
T3
DC
FRONT
AC IN
GND
DIG1
TX IN
FDM
TX IN
DIG2
TX IN
TX
IF OUT
CONTROL
DIG1
RX OUT
FDM
RX OUT
DIG2
RX OUT
RX
IF IN
J101
J102
J103
J104
J105
J106
J107
J108
J109
REAR
FIGURE 1.1
Model 1200-05 Front and Rear Panels
RX
IF MON
(J1)
70 MHZ
SAW BP
S
P
L
I
T
T
E
R
AGC CONTROL
RX
IF IN
(J109)
ATT
DIG1
TX IN
(J101)
FDM
TX IN
(J102)
DIG2
TX IN
(J103)
ATT
ATTEN
T1
C
O
M
B
I
N
E
R
ATTEN
T2
ATTEN
T3
S
P
L
I
T
T
E
R
S
P
L
I
T
T
E
R
ATTEN
R1
DIG1
RX OUT
(J106)
ATTEN
R2
FDM
RX OUT
(J107)
ATTEN
R3
DIG2
RX OUT
(J108)
TX
IF OUT
(J104)
TX
IF MON
(J2)
1200-05 Block Diagram
1200-05 Manual, Rev. 0
Page 3
10/14/10
1.2 Technical Characteristics
TABLE 1.1 1200-05 IF Processor Specifications*
RX Input Characteristics
Impedance/Return Loss
50Ω /18 dB
Frequency
50 to 90 MHz
Level Range
-15 to -95 dBm
1 dB compression
-10 dBm
RX Output Characteristics
Output Impedance/RL
50Ω, 75Ω/18 dB
Monitor/AGC Out Level
-30 dBm, +5, -15 dB
Level Range, Nominal
-30 to -50 dBm
RX Channel Characteristics
Gain, AGC
-25 to +45 dB range
AGC Response time, typ.
6 sec. 10 dB step
Gain Adjustment
0 to -20 dB
Frequency Response
±1.0 dB
TX Input Characteristics
Impedance/Return Loss
50Ω, 75Ω /18 dB
Frequency
50 to 90 MHz
Level Range
-20 to +5 dBm
TX Output Characteristics
Impedance/Return Loss
50Ω, /18 dB
Level Range
+5 to -20 dBm
1 dB compression
+10 dBm
TX Channel Characteristics
Gain Adjustment
0 to -30 dB
Frequency Response
±1.0 dB
Group Delay, max.
+5 ns, max.
TX Switch Characteristics
Isolation, Switch off
≥ 60 dB
Isolation, Port to Port
≥ 50 dB, all “ON”
Switch Time
≤ 10 milliseconds
SAW filter prior to AGC detection circuitry typical characteristics
1 dB Bandege (typ.)
69.9 MHz lower; 70.09 MHz upper
40 dB Bandege (typ.)
69.56 MHz lower; 70.46 MHz upper
Controls, Indicators
DIG1TX, FDMTX, DIG2TX
Green LEDs and SPDT switches
LOCAL/REMOTE
Red LED and SPDT switches
OVERRIDE
Yellow LED
POWER
Green LED indicates power is supplied to the unit
Other
IF Connectors
TNC (female)
Connector, DC, Control
DB9 (female)
Size
19.0” 1RU chassis x 14.0” deep
Power
100-240 ±10% VAC, 47 - 63 Hz, 30 watts max.
*+10 to +40 degrees C; Specifications subject to change without notice.
1200-05 Manual, Rev. 0
Page 4
10/14/10
2.0 Installation
2.1 Mechanical - The 1200-05 consists of one PCB assembly and one power supply housed in a 1 RU (1 3/4
inch high) by 14 inch deep chassis. An AC power supply provides +15 VDC and -15 VDC to the PCB. The
1200-05 can be secured to a rack using the 4 holes on the front panel. Figure 2.1 shows how the 1200-05 is
assembled.
FRONT
1
POWER
SUPPLY
J3
PIN
1
2
3
DESC
GND
-15V
+15V
REAR
FIGURE 2.1 1200-05 Mechanical Assembly
1200-05 Manual, Rev. 0
Page 5
10/14/10
2.2
Rear Panel Input/Output Signals and Controls - Figure 2.2 and Table 2.1 show the input, output.
and control connectors on the rear panel.
AC INPUT
AC input for power supply. 100-240
±10% VAC, 47-63 Hz, 30W max.
J106 - DIG1 RX OUT
Output, BNC female, 50Ω.
AC
GND
J101 - DIG1 TX IN
Input, BNC female, 50Ω.
J107 - FDM RX OUT
Output, BNC female, 50Ω.
J108 - DIG2 RX OUT
Output, BNC female, 50Ω.
DIG1
TX IN
FDM
TX IN
DIG2
TX IN
TX
IF OUT
CONTROL
J101
J102
J103
J104
J105
J102 - FDM TX IN
Input, BNC female, 50Ω.
J103 - DIG2 TX IN
Input, BNC female, 50Ω.
FIGURE 2.2
J104 - TX IF OUT
Output, BNC female, 50Ω.
J109 - RX IF IN
Input, BNC female, 50Ω.
DIG1
RX OUT
FDM
RX OUT
DIG2
RX OUT
RX
IF IN
J106
J107
J108
J109
J105 - SWITCH CONTROL
DB9, female. Allows for REMOTE control of the
1200-05 TX switches, and contains AGC and
LOCAL indicator signals. See Tables 2.1 and 2.2.
1200-05 Rear Panel I/Os and Control
5 4 3 2 1
9 8 7 6
TABLE
2.1
PIN
J105
(DB9)
Control/
Control/Indicator
/ Indicator
Signals
CONTROLS
1
SELECT DIG1 TX IN
External Closure In
GND/Open OFF; +15 VDC(+V) ON
2
SELECT FDM TX IN
External Closure In
GND/Open OFF; +15 VDC(+V) ON
3
SELECT DIG2 TX IN
External Closure In
GND/Open OFF; +15 VDC(+V) ON
4
LOCAL Indicator OUT
Indicator Output
GND LOCAL Control; Open REMOTE Control
GND
Ground Reference
59
2.3
-
6
OVERRIDE IN
Local Override Input
+15 VDC (+V) overrides LOCAL control and allows for REMOTE control
7
AGC OUT
AGC Voltage
Indicates current AGC gain (see Table 2.2)
8
+V
DC Voltage Reference +15 VDC
Front Panel Controls and Indicators - The following are the front panel outputs, controls
and indicators.
DS1 - DIG1 LED
Lights green when
DIG1 TX is on.
DS2 - FDM LED
Lights green when
FDM TX is on.
DS3 - DIG2 LED
Lights green when
DIG2 TX is on.
DS4 - LOCAL LED
Lights red when in
LOCAL operation.
DS5 - OVERRIDE LED
Lights yellow when REMOTE
control is overriding LOCAL
control.
RX
IF MON
R1, R2, R3, T1, T2, T3 - ADJUSTABLE ATTEN
Potentiometers that control the attenuation of RX
DIG1 (R1), RX FDM (R2), RX DIG2 (R3), TX DIG1
(T1), TX FDM (T2), and TX DIG2 (T3) channels.
Adjustable from 0 to 30 dB attenuation. Clockwise
rotation decreases attenuation.
MODEL 1200
TX
IF MON
ON
ON
ON
IF PROCESSOR
LOCAL
GAIN
REMOTE
J1
J1 - RX IF MON
RX monitor output
after AGC, BNC
female.
DIG1
FDM
DIG2
SW1 - DIG1 TX SW
Turns on (up) DIG1
TX input when in
LOCAL operation.
DIG1
FDM
DIG2
SW1
SW2
SW3
SW2 - FDM TX SW
Turns on (up) FDM
TX input when in
LOCAL operation.
FIGURE 2.3
1200-05 Manual, Rev. 0
SW4
R1
R2
R3
T1
T2
T3
LOCAL OVERRIDE J2
SW3 - DIG2 TX SW
Turns on (up) DIG2
TX input when in
LOCAL operation.
DC
SW4 - LOCAL/REMOTE SW J2 - TX IF MON
DS6 - POWER LED
Switches between LOCAL
TX monitor output of the Lights green when
and REMOTE operation.
switched (combined) TX DC power is applied.
output, BNC female.
1200-05 Front Panel Controls and Indicators
Page 6
10/14/10
2.4
Operation
2.4.1
Installing and Operating the 1200-05
1.) Install the 1200-05 in the equipment rack.
2.) Connect to signals on the CONTROL connector, J105, as desired (Figure 2.2).
3.) Connect 100-240 ±10% VAC, 47 - 63 Hz to AC IN on the back panel (Figure 2.2).
4.) Be sure the DC (power) LED, DS6, is on (Figure 2.3).
5.) Set SW4 for REMOTE or LOCAL operation (Figure 2.3).
6.) Choose the desired TX path(s) either remotely (J105, Figure 2.2) or locally using the front-panel
switches (SW1 - SW3, Figure 2.3) and check for proper signal(s) at TX IF MON (J2, Figure 2.3)
or TX IF OUT (J104, Figure 2.2) and that the appropriate LED(s) (DS1 - DS3, Figure 2.3) is lit.
7.) Adjust attenuator pots (R1, R2, R3, T1, T2, T3) as needed. Clockwise rotation provides
increased output level (full clockwise = 0 dB atten, full counterclockwise = 30 dB atten).
8.) 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 2.4. There is a spare fuse in the near slot.
If a fuse continues to open, the power supply is most likely defective.
FUSE DRAWER
SPARE FUSE
AC Fuse - 2 amp slow blow (Type T),
5 mm X 20 mm
INPUT
~
~
100-240± 10%VAC
47-63 Hz
2A MAX
FIGURE 2.4
1200-05 Manual, Rev. 0
FUSE
TYPE T 2A GDC
250 VOLT
FOR 100 - 240 V~
Fuse Location and Spare Fuse
Page 7
10/14/10
2.4.2 AGC voltage relating to Gain - The 1200-05 IF Processor operates over a 0 to -80 dBm input range
on the RX IF side. The Automatic Gain Control (AGC) provides a constant -30 dBm +5, -15 dBm output RX
IF level over the entire input range. Pin 7 of the DB9 control connector, J105, can be monitored to determine
the approximate input level (and corresponding gain) in AGC as Table 2.2 shows.
TABLE 2.2 - Approximate AGC Voltage
Vo
oltage vs Gain and Input Level
Le
evel
AGC Voltage (pin 7, J105)
AGC Gain
Input Level
-0.2 VDC
-14 dB
-10 dBm
-0.5 VDC
-10 dB
-20 dBm
-1.2 VDC
0 dB
-30 dBm
-1.6 VDC
+10 dB
-40 dBm
-1.8 VDC
+20 dB
-50 dBm
-2.0 VDC
+30 dB
-60 dBm
-2.2 VDC
+40 dB
-70 dBm
-2.3 VDC
+47 dB
-80 dBm
-2.4 VDC
+50 dB
-90 dBm
1200-05 Manual, Rev. 0
Page 8
10/14/10
1.3 Environmental Use Information
A. Elevated operating ambient temperature - if installed in a closed or multiunit rack assembly,
the operating ambient temperature of the rack may be greater than room ambient temperature.
Therefore, consideration should be given to Tmra.
B. 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
unit may be required.
C. Mechanical loading - Mounting of equipment in a rack should be such that a hazardous condition
does not exist due to uneven weight distribution.
D. 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.
E. 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).
F. 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.
1200-05 Manual, Rev. 0
Page 9
10/14/10
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 info@crosstechnologies.com
Printed in USA
1200-05 Manual, Rev. 0
Page 10
10/14/10