SMI Series
Four & Eight Port Interdiction Housings
with 750 MHz Subscriber Modules
Description
oor
Outdosure
Encl
Passes to 750 MHz!
Jams to 550 MHz!
See Ordering
Information for
Stock Numbers
Ref. SSSMI.B
BLONDER
TONGUE
L A B O R A T O R I E S, I N C.
One Jake Brown Road
Old Bridge, NJ 08857
(732) 679-4000
Fax (732) 679-4353
Visit Us On The Web
blondertongue.com
Interdiction technology offers a unique alternative to addressable control without the use of set-top terminals.
This consumer friendly technology uses off-premise electronics to enhance operational efficiency, marketing flexibility,
and signal security. The Subscriber Module Interdiction (SMI) architecture is ideal for low penetration, low density
applications.
Features
• Passes analog or digital signals up to 750 MHz
• Reverse path of 5-40 MHz supports telephony and other interactive services
• Provides complete, addressable control of each subscriber port, including forward and reverse
connect/disconnect capability and service level changes
• Independently jams channels from 120-550 MHz, which eliminates the need for headend scramblers to
secure premium and pay-per-view (PPV) services
• Delivers a secured, broadband signal to the home, which eliminates the need for set-top terminals for
cable-ready televisions
• Jamming architecture maximizes signal security and improves picture quality
• Automatic gain control (AGC) maintains constant subscriber output levels despite changes in feeder
input levels
• Allows pocket deployment in high density, high churn areas
• Four- and eight-port configurations replace the tap in the distribution system
• Flexible installation in a wall-mounted security enclosure, pedestal, or on the strand
• Passes power to the unused feeder port and the subscriber port for customer premise equipment
• 37-90 V AC cable powering optimizes system compatibility
Multi-Dwelling Complete: Headend, Transmission, Distribution Interdiction & Test
Specifications
SMI Series
INTERDICTION UNIT
Through to Actual Feeder
Billing
Computer
Combining
Network
CATV
Channels
108.2 MHz
Addressable Transmitter
System Manager
TV
TV
VCR
Four-Port or Eight-Port SMI Addressable Interdiction Units serve either four (illustrated) or eight dwellings via individual drops.
BLONDER
TONGUE
LABORATORIES,INC.
Description
Reduced Costs and Increased Revenues
Interdiction products combine the functionality of a tap with the
addressability of a set-top terminal. By placing the subscriber
electronics outside the home, the cable operator still maintains
complete, addressable control of the tap from the headend, but
gains operational efficiency, marketing flexibility, and increased
signal security.
Since subscriber connects, disconnects, and service level
changes are controlled remotely, the cable operator experiences fewer truck rolls. Also, with the elimination of set-top
terminals for cable-ready televisions, the problem of set-top
theft is solved. Both benefits greatly reduce maintenance
and product replacement costs.
The SMI interdiction system is controlled from the headend using
Scientific-Atlanta’s System Manager 10/20 computer, which
interfaces to the cable operator’s central billing computer. Changes
from the headend are quickly communicated to the interdiction
devices using an out-of-band addressable transmitter. With the
System Manager controller, the interdiction system supports all
conventional PPV modes, such as automatic number identification
(ANI) and automated response unit (ARU).
In addition to enhancing operational efficiency, interdiction
technology increases marketing flexibility and revenues. By
removing the set-top barrier, special promotions can be
offered without any additional service calls or in-home electronics to subscribers and non-subscribers. This flexibility
allows for easy free trials, which can result in increased
sales of cable services due to lifts in basic, premium, and
PPV penetration.
Compatibility with Other Formats and Services
Ultimate in Signal Security and Picture Quality
The interdiction system does not require the use of headend
scramblers to protect services. Instead, all channels are transmitted
in the clear and unauthorized services from 120-550 MHz are
jammed prior to entering the home. Due to the fact that jamming
is based on frequencies and not channels, this approach ensures
compatibility with various video transmission formats. Additionally,
analog and digital services, such as video, data, and telephony, can
pass transparently through the interdiction unit in both the forward
and reverse path.
Instead of scrambling, the interdiction device jams an unauthorized channel by inserting an interfering carrier above the
video signal. This jamming carrier obliterates the picture and
in many cases masks the audio. If needed, the level of jamming can be varied to increase the amount of protection for
premium, PPV, and adult programming services. The characteristics of the jamming signals and their placement within
the channel band prevent any compromise in signal security.
Due to the fact that authorized channels are sent in the clear,
there are no scrambling-related picture artifacts. As a result,
picture quality is improved.
Specifications
SMI Series
Whole House Service
The interdiction device provides a secured, broadband signal to the entire home allowing direct connection to any
cable-ready television. Broadband delivery of cable services
minimizes the complexity of installation and setup, eliminates the need for additional equipment in the home, and
allows subscribers to retain the full use of their in-home
electronics such as picture-in-picture and VCRs.
Pocket Deployment
The interdiction device is available in a four- or eight-port
configuration which replaces the tap in the distribution system. Consequently, it is an ideal product to serve pockets
within any network. Operators can enjoy the full benefits of
interdiction through partial deployment in high-density,
high-churn areas such as hospitals, university campuses,
resorts, and apartment complexes.
The housing top and bottom protect the interdiction
electronics in a lockable, tamper-proof, environmentally protected, RF shielded enclosure.
2A, 2B and 2C - Feeder Cable Ports
The housing can be mounted on the wall, the aerial
strand, or in a ground pedestal. Cable ports A and B
provide a trough path for strand-mounted applications. Cable ports B and C provide a trough path for
pedestal-or-wall mounted applications.
3 - Seizure Board
The seizure board taps RF and power from the feeder cable. A 3 dB plug-in attenuator pad will be available shortly to support reverse path balancing. This
pad can be removed and replaced with a pad of a
different value depending on design needs. Previous
boards include a fixed, non-changeable 3 dB pad.
UNIT DIAGRAM- Please refer to the figures below
and on the following page.1A and 1B - Housing
Top & Bottom
Four-Port SMI Addressable Interdiction Unit and Subscriber Module
Removable Reverse
Path Attenuator Pad
1A. Housing
Cover
Power-Passing
Seizure Block
2C. Feeder
Cable Port C
5. Equalizer
3. Seizure Board
2A. Feeder
Cable Port A
2B. Feeder
Cable Port B
4. Directional
Coupler
9. Subscriber
Modules
6. Mother
Board
1B. Housing
Bottom
BLONDER
TONGUE
L A B O R A T O R I E S, I N C.
8. Data Receiver
7. Power
Supply
10. Combiner
Board
Power Jumper
(Optional)
9. Subscriber Module
(enlarged scale)
One Jake Brown Road
Old Bridge, NJ 08857
(732) 679-4000
Fax (732) 679-4353
Visit Us On The Web
blondertongue.com
Multi-Dwelling Complete: Headend, Transmission, Distribution Interdiction & Test
Specifications
SMI Series
4 - Direction Coupler
8 - Data Receiver
The directional coupler determines the tap value of the interdiction
unit.
The data receiver accepts commands from the System
Manager computer. Commands are transmitted on a dedicated, out-of-band carrier.
5 - Equalizer
The equalizer controls the tilt of the subscriber output signal. It
does not affect the feeder cable or reverse path signal.
6 - Motherboard
The motherboard provides the AGC and interface for the subscriber
modules and data receiver. It also contains a microprocessor that
stores the subscriber port addresses and service levels in nonvolatile memory. This allows a subscriber module to be moved
from one slot or housing to another without any database change.
7 - Power Supply
The power supply transforms network AC voltage and provides DC
voltage for the housing electronics. Specific models also pass
power to each port.
9 - Subscriber Modules
The subscriber modules are plug-in electronics that are
dedicated on a per-subscriber basis. The modules contain
the jamming electronics and the forward and reverse connect/disconnect circuitry. Additionally, each module has a
power passing jumper slot. When installed in a power passing housing with an optional jumper, the subscriber module
passes power to the home. (Note: software control of the
reverse path switch by System Manager 10/20 will be
implemented in a future software release.)
10 - Combiner Board
The combiner board combines the reverse path of each
subscriber module into a single reverse path output.
Eight-Port SMI Addressable Interdiction Unit
Removable
Reverse Path
Attenuator Pad
Power-Passing
Seizure Block
1A. Housing
Cover
2C. Feeder
Cable Port C
5. Equalizer
3. Seizure Board
2A. Feeder
Cable Port A
2B. Feeder
Cable Port B
4. Directional
Coupler
9. Subscriber
Modules
6. Mother
Board
1B. Housing
Bottom
BLONDER
TONGUE
LABORATORIES,INC.
8. Data Receiver
7. Power
Supply
10. Combiner
Board
Specifications
SMI Series
General
Units
Frequency range
Forward path:
Reverse path:
Insertion loss:
Transient protection:
Regulatory:
Spurious Output:
51 to 750
5 to 40
See tables below
Argon gas discharge tubes
Complies with FCC rules and
regulations, part 76
MHz
MHz
Electrical
Minimum feeder input levels
Full AGC1
No AGC2
4-port
8-port
4-port
8-port
51 MHz
17.0 dBmV
20.5 dBmV
12.5 dBmV
16.0 dBmV
550 MHz
23.0 dBmV
26.5 dBmV
18.5 dBmV
22.0 dBmV
750 MHz
25.0 dBmV
28.5 dBmV
20.5 dBmV
24.0 dBmV
51 MHz
15.5 dBmV
19.0 dBmV
11.0 dBmV
14.5 dBmV
550 MHz
21.5 dBmV
25.0 dBmV
17.0 dBmV
20.5 dBmV
750 MHz
23.5 dBmV
27.0 dBmV
19.0 dBmV
22.5 dBmV
Motherboard input levels3:
Optimal
(full AGC1)
Minimal
(no AGC2)
4-port
8-port
4-port
8-port
2 For every 1 dB increase in feeder input level, AGC dynamic range increases
±1 dB (up to ±4.5 dB maximum)
4-port (no AGC)4:
8-port (no AGC) :
4
5.5
+ DC port loss + EQ loss
9.0
+ DC port loss + EQ loss
1.0
+ DC port loss + EQ loss
4.5
+ DC port loss + EQ loss
dB
dB
dB
dB
4 For every ±1 dB increase in AGC dynamic range, add 1 dB (up to 4.5 dB
maximum) to the forward path tap loss
Reverse path tap loss 5
4-port:
8-port:
10.5
+ DC port loss
14.0
+ DC port loss
dB
dB
Subscriber port output level:
18.0 dBmV ±0.5 dB @ 750 MHz
16.0 dBmV ±0.5 dB @ 550 MHz
10.0 dBmV ±0.5 dB @ 51 MHz
Feeder input and output return loss
5 to 7 MHz:
>9
7 to 40 MHz:
> 13
51 to 550 MHz:
> 16
550 to 750 MHz:
> 14
LABORATORIES,INC.
dB
dB
dB
-65
-61
Static or dynamic
75
550 MHz
(77 Channel)
< -75 dBc
< -66 dBc
< -58 dBc
dBc
dBc
Ω
750 MHz
(110 Channel)
< -68 dBc
< -59 dBc
< -55 dBc
Voltage controlled oscillator frequency range
VCO 1:
120.0 - 169.5 (ch. 14-22) MHz
VCO 2:
210.0 - 283.5 (ch. 13, 23-34)MHz
VCO 3:
288.0 - 365.5 (ch. 35-47) MHz
VCO 4:
366.0 - 457.5 (ch. 48-63) MHz
VCO 5:
458.0 - 547.5 (ch. 64-78) MHz
Slots:
16 per VCO
80 per module
Cable power:
Maximum feeder current:
Power passing to port
(optional):
Power passing to
unused feeder port
4-port:
8-port:
Power consumption:
Input voltage 37 to 90
15
VAC
A
250
mA
1
2
See 4-port and 8-port
Power Consumption Tables
A
A
Mechanical
5 Includes 3 dB loss for the seizure board attenuator pad. Shortly, the 3 dB pad
can be removed and replaced with a different pad value. In this case, subtract
3 dB from the reverse path loss and add the new pad value.
BLONDER
TONGUE
> 60
> 40
55
Power
3 Motherboard input levels are after the combined loss of the DC and EQ
8-port (full AGC):
Port-to-port isolation
51 to 550 MHz:
550 to 750 MHz:
Carrier-to-noise:
Hum modulation
5 to 450 MHz:
450 to 750 MHz:
Subscriber disconnect:
Input/output impedance:
CTB
XMOD
CSO
Units
-60
dB
with respect to nominal video level
Jamming
1 Full AGC provides ±4.5 dB dynamic range
Forward path tap loss
4-port (full AGC):
Electrical (continued)
Housing:
Dimensions (L x W x H)
4-port:
8-port:
4-port weight
housing only:
subscriber module:
fully loaded:
8-port weight
housing only:
subscriber module:
fully loaded:
Strand clamp:
Die-cast aluminum (alloy 360)
15.0 x 7.5 x 7.75
5.5 x 12.25 x 7.75
in.
in.
8.5
1.0
12.5
lbs
lb.
lbs
14.0
1.0
22.0
Accepts 1/4 in. to 5/16 in.
diameter cable
lbs
lb.
lbs
Addressable Receiver
dB
dB
dB
dB
Carrier frequency 108.2 MHz standard
Environmental
Ambient temperature range:
Humidity:
-40 to 60
5 to 100
°C
%
Specifications
SMI Series
750 MHz DC Insertion Loss and DC Coupled Port Loss Tables
DC Feeder Insertion Loss
Reverse Path
Forward Path
DC Value
Part #
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.5
9.0
10.5
12.0
13.5
15.0
16.5
18.0
19.5
21.0
22.5
24.0
25.5
27.0
28.5
30.0
31.5
291659
291611
378224
378225
562958
562959
562960
562961
562962
562963
562964
562965
562966
562967
562968
562969
562970
562971
562972
562973
562974
562975
562976
562977
5 MHz
40 MHz
51 MHz
550 MHz
DC Coupled Port Loss 6
Reverse Path
Forward Path
750 MHz
5 MHz
40 MHz
51 MHz
550 MHz
750 MHz
4.2
4.2
2.7
2.7
2.4
2.4
1.7
1.7
1.7
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
0.3
0.8
1.8
2.8
8.2
8.8
6.7
7.7
9.5
10.4
12.0
13.5
15.0
16.4
17.8
19.6
20.9
22.3
23.9
25.5
26.8
28.3
29.8
30.9
0.8
1.3
2.3
3.3
6.1
7.0
7.5
8.4
10.5
11.3
12.8
14.3
15.7
17.1
18.4
20.2
21.4
22.9
24.5
26.1
27.4
28.8
30.3
31.3
0.7
1.7
2.7
3.7
5.4
6.3
7.0
8.0
10.2
11.1
12.7
14.2
15.6
17.0
18.4
20.2
21.4
22.9
24.5
26.2
27.4
29.0
30.5
31.6
0.7
1.7
2.7
3.7
5.2
6.4
7.4
8.3
9.3
10.0
11.1
12.3
13.3
14.8
15.1
16.4
17.1
18.3
19.5
21.5
22.1
22.8
23.4
23.7
0.7
1.7
2.7
3.7
5.3
6.7
9.8
10.6
9.4
9.9
11.6
12.2
13.4
14.6
14.3
15.6
15.9
16.9
17.8
20.3
20.5
20.4
20.5
20.4
Terminating
2.5
2.4
2.3
2.3
2.1
2.1
1.4
1.4
1.2
1.2
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
1.3
2.5
2.4
1.8
1.8
1.4
1.4
1.0
1.0
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
3.5
3.5
2.1
2.1
1.4
1.4
0.8
0.8
0.8
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
3.9
3.9
2.4
2.5
2.1
2.1
1.3
1.3
1.3
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
NOTES
6 All forward and reverse DC coupled port losses include the additional loss of
the diplex filter.
750 MHz EQ Insertion Loss Tables
BLONDER
TONGUE
LABORATORIES,INC.
EQ Value
Part #
51 MHz
550 MHz
750 MHz
-9.0
-7.5
-6.0
-4.5
-3.0
-1.5
0.0
1.5
3.0
4.5
6.0
7.5
9.0
10.5
12.0
13.5
15.0
16.5
18.0
19.5
562996
562995
562994
562993
562992
562991
566057
562978
562979
562980
562981
562982
562983
562984
562985
562986
562987
562988
562989
562990
2.7
1.9
1.4
1.6
0.1
0.1
0.1
1.9
2.9
4.1
5.4
6.5
7.5
8.8
10.0
11.4
12.2
13.6
14.7
15.6
9.1
7.5
5.9
4.4
2.7
1.3
0.1
1.2
1.3
1.5
1.8
1.9
2.1
2.5
2.9
3.4
3.3
3.8
3.8
4.0
10.4
8.5
6.2
4.8
3.0
1.5
0.2
0.9
0.8
0.8
0.9
0.7
0.7
0.9
1.0
1.3
0.9
1.0
0.8
0.9
Specifications
SMI Series
4-Port Power Consumption 7
Volts
35.00
40.00
45.00
50.00
55.00
60.00
65.00
70.00
75.00
80.00
85.00
90.00
Housing Only
Current
Watts
0.09
0.08
0.08
0.07
0.07
0.07
0.06
0.06
0.06
0.07
0.07
0.07
2.35
2.45
2.56
2.64
2.73
2.88
3.04
3.04
3.04
3.15
3.25
3.36
w/1 Module
Current
Watts
0.17
0.16
0.14
0.13
0.13
0.12
0.11
0.11
0.10
0.10
0.10
0.10
5.35
5.27
5.18
5.34
5.50
5.50
5.50
5.71
5.92
6.01
6.10
6.19
w/2 Modules
Current
Watts
0.26
0.23
0.20
0.19
0.18
0.17
0.16
0.15
0.15
0.14
0.14
0.13
7.74
7.85
7.95
7.99
8.02
8.04
8.06
8.25
8.44
8.52
8.61
8.69
w/3 Modules
Current
Watts
0.36
0.32
0.27
0.26
0.24
0.22
0.21
0.20
0.19
0.19
0.19
0.18
11.07
10.96
10.86
10.68
10.50
10.60
10.71
10.66
10.61
10.77
10.94
11.11
w/4 Modules
Current
Watts
0.50
0.43
0.37
0.33
0.30
0.28
0.26
0.24
0.23
0.22
0.21
0.21
14.74
14.25
13.76
13.60
13.44
13.30
13.17
13.43
13.69
13.81
13.94
14.07
8-Port Power Consumption 7
35.00
40.00
45.00
50.00
55.00
60.00
65.00
70.00
75.00
80.00
85.00
90.00
Housing Only
Current
Watts
0.18
5.25
0.17
5.20
0.15
5.15
0.14
5.27
0.13
5.40
0.13
5.48
0.13
5.57
0.13
5.85
0.13
6.13
0.13
6.44
0.13
6.76
0.13
7.08
w/1 Module
Current
Watts
0.26
7.81
0.24
7.79
0.21
7.77
0.20
7.89
0.19
8.02
0.18
8.23
0.18
8.44
0.17
8.63
0.17
8.82
0.16
9.12
0.16
9.43
0.16
9.74
w/2 Modules
Current
Watts
0.36
10.33
0.32
10.36
0.28
10.40
0.26
10.50
0.25
10.61
0.23
10.71
0.22
10.82
0.22
11.08
0.21
11.34
0.21
11.66
0.21
11.98
0.20
12.31
w/3 Modules
Current
Watts
0.44
12.92
0.40
12.92
0.35
12.92
0.32
12.94
0.30
12.96
0.28
13.11
0.27
13.27
0.26
13.56
0.25
13.86
0.24
14.10
0.23
14.35
0.23
14.60
Volts
w/5 Module
Current
Watts
w/6 Modules
Current
Watts
w/7 Modules
Current
Watts
w/8 Modules
Current
Watts
Volts
35.00
40.00
45.00
50.00
55.00
60.00
65.00
70.00
75.00
80.00
85.00
90.00
BLONDER
TONGUE
LABORATORIES,INC.
0.67
0.58
0.50
0.46
0.42
0.39
0.37
0.36
0.35
0.33
0.31
0.30
19.78
19.29
18.80
18.71
18.63
18.71
18.80
19.01
19.22
19.46
19.70
19.95
0.80
0.71
0.62
0.57
0.52
0.48
0.45
0.44
0.43
0.41
0.39
0.37
22.58
22.39
22.20
22.02
21.84
21.68
21.53
21.70
21.88
22.09
22.30
22.51
0.87
0.75
0.64
0.58
0.53
0.50
0.47
0.45
0.43
0.41
0.39
0.38
NOTES
7 Measurements are adjusted to compensate for changes over temperature.
25.73
25.12
24.52
24.18
23.84
23.86
23.89
24.10
24.31
24.53
24.76
24.99
0.97
0.84
0.71
0.65
0.59
0.55
0.51
0.49
0.47
0.45
0.44
0.43
28.81
27.96
27.11
26.84
26.57
26.81
27.05
27.02
26.99
27.21
27.43
27.66
w/4 Modules
Current
Watts
0.57
16.74
0.50
16.24
0.43
15.75
0.39
15.70
0.36
15.65
0.34
15.77
0.32
15.90
0.30
16.03
0.29
16.17
0.28
16.31
0.26
16.45
0.25
16.59
Ordering Information
SMI Series
Ordering Information
Accessories
SMI
Stock No. 5647xx
Four Port Interdiction Housing
SMI
Stock No. 5653xx
Eight Port Interdiction Housing
Housings
4-port strand
4-port pedestal
8-port strand
8-port pedestal
Power Passing
(Part#)
564785
564783
564771
564769
Fixed Non-power
Passing(Part #)
565340
565339
565338
565337
Subscriber Module
• Part # 564265 (1 required per subscriber)
• Part # 568839
Optional power passing jumper (for use with power
passing housing only) minimum order quantity is 50.
Directional Coupler
• See table on previous page (1 required per housing)
Equalizer
• See table on previous page (1 required per housing)
BLONDER
TONGUE
LABORATORIES,INC.
NOTES
Scientific Atlanta and the Scientific-Atlanta logo are registered trademarks of
Scientific-Atlanta, Inc.
• Part # 376602
20 dB test point
• Part # 570200
Addressable Interdiction System
Reference manual
• Part # 570201
750 MHz 8-port DC & EQ Reference Card
• Part # 570202
750 MHz 4-port DC & EQ Reference Card
• Part # 570203
Designing an Interdiction System Manual
• Part # 570204
Addressable Interdiction Installation Quick
Reference Guide
• Part # 464205
Scientific Atlanta Model 8653-SU Addressable
Transmitter
• Part # 467900
Scientific Atlanta System Manager 10
• Part # 565475
Scientific Atlanta System Manager 20
• Reverse path attenuator pads
For values and part numbers, see “Pad Ordering
Information” section of data sheet Plug-in Pads,
Forward and Reverse Equalizers for Line Extender
I, II, III and System Amplifier I, II, III