Cisco Multimedia Line Equalizer/Reverse Conditioner 1 GHz - 85/105 MHz Split Data Sheet

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Updated:January 22, 2014

Document ID:1518366190632830

Bias-Free Language

The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.

The Cisco® Multimedia Line Equalizer/Reverse Conditioner (LEQ/RC), shown in Figure 1, improves network performance on both the forward and reverse paths in a coaxial transmission system.

In the forward path, the fixed forward equalizer offsets undesirable down-tilt associated with cumulative cable and passive losses, allowing tap port RF levels to be maintained within desired design limits, even at taps located near the ends of lines.

In the reverse path, plug-in attenuation allows RF levels to be conditioned for optimal performance of critical reverse path services. By selectively adding reverse attenuation at Cisco Multimedia LEQ/RC locations, the range of RF levels transmitted from closed-loop customer premises equipment in a given service area can be narrowed considerably.

With greater percentages of devices, such as high-speed data and telephony modems, transmitting in the upper end of their RF transmit ranges, improvements in carrier-to-ingress and carrier-to-noise performance can be realized.

Figure 1. Cisco Multimedia Line Equalizer/Reverse Conditioner

Features

• Fixed 9 dB or 11 dB forward equalizers

• Plug-in attenuator location for reverse-path optimization

• Connection beam non-interruptible AC and RF bypass (Figure 2) that optimizes network availability during maintenance periods

• Equalizer in and out bypass, which allows reverse conditioning deployment network locations where forward equalization is not desired

• 15A current passing capability, which allows placement in all portions of the network

• 6 kV surge protection

• Circuit contained in faceplate, compatible with existing Cisco line equalizer products

• Rugged, polymer-coated housing that provides reliable performance in the most challenging environments; additional labels provided in packaging mark the tap containing a DC/EQ module

Figure 2. Block Diagram

Product Specifications

Tables 1 through 7 provide product specifications.

Table 1. Insertion Loss


Insertion Loss
Frequency	Bypass Mode		Equalization Mode
	Bypass Mode		9 dB		11 dB
	Typical	Maximum	Typical	Maximum	Typical	Maximum
5 MHz	-0.5 dB	-1.0 dB	-0.5 dB	-1.0 dB	-0.5 dB	-1.0 dB
10 MHz	-0.4 dB	-1.0 dB	-0.4 dB	-1.0 dB	-0.4 dB	-1.0 dB
40 MHz	-0.7 dB	-1.0 dB	-0.7 dB	-1.0 dB	-0.7 dB	-1.0 dB
50 MHz	-0.9 dB	-1.0 dB	-0.9 dB	-1.0 dB	-0.9 dB	-1.0 dB
85 MHz	-1.0 dB	-1.3 dB	-1.0 dB	-1.3 dB	-1.0 dB	-1.3 dB
105 MHz	-1.1 dB	-1.3 dB	-7.9 dB	-8.5 dB	-10.8 dB	-11.5 dB
450 MHz	-0.9 dB	-1.3 dB	-5.5 dB	-5.8 dB	-5.9 dB	-6.7 dB
550 MHz	-1.0 dB	-1.4 dB	-4.5 dB	-5.1 dB	-4.8 dB	-5.8 dB
650 MHz	-1.0 dB	-1.7 dB	-3.7 dB	-4.5 dB	-4.0 dB	-5.0 dB
750 MHz	-1.1 dB	-1.8 dB	-3.1 dB	-3.9 dB	-3.3 dB	-4.3 dB
870 MHz	-1.4 dB	-2.0 dB	-2.3 dB	-3.2 dB	-2.7 dB	-3.5 dB
1000 MHz	-1.9 dB	-2.2 dB	-2.2 dB	-2.5 dB	-2.3 dB	-2.5 dB

Table 2. Return Loss


Return Loss
Frequency	Bypass Mode		Equalization Mode
	Bypass Mode		9 dB		11 dB
	Typical	Minimum	Typical	Minimum	Typical	Minimum
5 to 10 MHz	-16 dB	-15.5	16 dB	-15.5	-16 dB	-15.5
11 to 85 MHz	-18 dB	-16	17 dB	-16	-17 dB	-16
105 to 1000 MHz	-18 dB	-16	17 dB	-16	-17 dB	-16

Table 3. Flatness


Flatness
Frequency	Bypass Mode		Equalization Mode
	Bypass Mode		9 dB		11 dB
	Typical	Maximum	Typical	Maximum	Typical	Maximum
5 to 85 MHz	0.65 dB	0.65 dB	0.65 dB	0.65 dB	0.65 dB	0.65 dB
105 to 1000 MHz	0.75 dB	0.75 dB	0.75 dB	0.75 dB	0.75 dB	0.75 dB

Table 4. Group Delay


Group Delay
Frequency	Typical	Maximum
Forward
109.25 to 112.83 MHz	15 ns	20 ns
115.25 to 118.83 MHz	7 ns	10 ns
Reverse
5.0 to 6.5 MHz	40 ns	40 ns
6.5 to 8.0 MHz	20 ns	30 ns
8.0 to 9.5 MHz	9 ns	15 ns
80.5 to 82.0 MHz	9 ns	15 ns
82.0 to 83.5 MHz	8 ns	20 ns
83.5 or 85 MHz	17 ns	30 ns

Table 5. Power Passing


Power Passing
Frequency	Bypass Mode	Equalization Mode
		9 dB	11 dB
-	15A	15A	15A

Table 6. Hum Modulation


Hum Modulation
Frequency	Bypass Mode	Equalization Mode
Frequency	Bypass Mode	9 dB	11 dB
5 to 10 MHz	-60 dBc @12A	-60 dBc @12A	-60 dBc @12A
11 to 1000 MHz	-60 dBc @12A	-60 dBc @12A	-60 dBc @12A

Table 7. Safety and Compliance


Safety and Compliance
Items	Specs
EMC	EN50083-2, EN55022 Class A, EN55024 Class A, and FCC Part 76/Part 15
Safety standards	EN/IEC 60065, UL 497, 1459 ,and 1950

Note:

1. Chrominance and luminance at 3.58 MHz above the video carrier

2. Propagation delay in 2 MHz bandwidth

3. Unless otherwise noted, all the specifications in Table 1 through Table 7 reflect typical station performance at stated reference levels in the recommended operating configurations. Specifications are based on measurements made in accordance with SCTE/ANSI standards (where applicable), using standard frequency assignments

Ordering Information

To place an order, visit the Cisco Ordering Home Page and refer to Table 8 and Table 9, which list the part numbers for the Cisco Multimedia LEQ/RC.

Table 8. Ordering Information


Description	Part Number
Cisco Multimedia LEQ/RC, 85/105 MHz split, 9 dB Forward EQ	4038256
Cisco Multimedia LEQ/RC, 85/105 MHz split, 11 dB Forward EQ	4038257

Table 9. Plug-In Attenuators


Value	Part Number	Value	Part Number	Value	Part Number
0 dB	574475	6 dB	574481	12 dB	574487
1 dB	574476	7 dB	574482	13 dB	574488
2 dB	574477	8 dB	574483	14 dB	574489
3 dB	574478	9 dB	574484	15 dB	574490
4 dB	574479	10 dB	574485	75 ohm	574496
5 dB	574480	11 dB	574486

For More Information

Cisco Multimedia Line Equalizer/Reverse Conditioner products include some of the industry's most complete range of high-performance components. For additional information, please go to: http://www.cisco.com/en/US/products/ps9101/index.html.

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