GigaXtend GMC 1.2GHz High Gain Dual (HGD) System Amplifier
The ATX GigaXtend™ GMC 1.2GHz High Gain Dual (HGD) System Amplifier is designed to assist cable operators in evolving their HFC networks to meet subscriber demand, while fully leveraging previous investments. The ATX GigaXtend GMC 1.2GHz HGD System Amplifier provides two high-level forward RF outputs (main and auxiliary), with the option to create a third RF output by using an optional plug-in auxiliary path signal director.
GigaXtend GMC 1.2GHz HGD System Amplifier modules have increased gain to allow drop-in for 750MHz, 870MHz and 1002MHz spacing. Backward compatibility often allows upgrades to higher bandwidth with no respacing or resplicing. The DC power supply is modular and located in an updated housing lid for easy access. All ATX GigaXtend GMC 1.2GHz system amplifier modules are factory configured with reverse amplifier, diplex filters, thermal compensation circuit, forward interstage pads and equalizer to promote optimal performance. Optional single-pilot Automatic Gain Control (AGC) configurations are also available.
Features
- High-performance GaN gain stage technology
- Plug-in accessories that are common to all GigaXtend Amplifiers (attenuator pads, diplexers and crowbar)
- Amplifier housing that provides access to RF test points without opening the housing
- Spring-loaded seizure assemblies allow coaxial connectors to be installed or removed without removing amplifier RF module
- Power supply mounted in housing lid for efficient thermal dissipation (60- and 90-VAC powering capability) survivability
- 15A current capacity (steady state) and 25A surge survivability
- Quadrature Amplitude Modulation (QAM) pilot AGC available (optional)
- AGC with thermal backup, which eliminates disruptive RF output variation in the event of pilot loss
- Reverse input pad and RF test point for each reverse input port to allow optimum reverse path design and alignment
- Surge-resistant circuitry that helps ensure gain stage protection without fuses or other failure-causing devices
Made in the U.S.A.
A critical BEAD funding qualification is purchasing equipment that is assembled in the U.S.A. ATX got a head start on that requirement when it opened a manufacturing facility in Holly, Michigan, April of 2023. Watch this video to get insight on how ATX is utilizing state-of-the-art manufacturing to crank out several hundred thousand intelligent HFC amplifiers a year.
Where Automation Meets Human Expertise
ATX and MARA Technologies’ state-of-the-art 1.8GHz HFC amplifier manufacturing plant in Holly, Michigan, features a unique symmetry of next-gen automation and human RF expertise.
Solution: Distributed Access Architecture (DAA)
ATX offers MSOs an extensive portfolio of next-generation inside and outside plant equipment that includes Video Engines, Digital Optical Transport, HFC Amplifiers and Hardline Passives, and conforms to all MSO architectures and specifications, including DAA, DOCSIS® 3.1, DOCSIS 4.0 and Extended Spectrum.
Insights
The Definitive Guide to Evolving Your HFC Network
Read this step-by-step guide to find the optimal path for upgrading your HFC network in lockstep with subscriber demand and without regrettable spend.
Download White PaperShould DOCSIS 3.1E Impact Your Next HFC Amplifier Purchase?
Learn about tradeoffs to consider when thinking of extending DOCSIS 3.1 vs. futureproofing the HFC network for DOCSIS 4.0.
Read BlogEvolve Your HFC Network
Find out why GigaXtend is the industry’s only portfolio of amps and hardline passives with a roadmap to 3GHz or higher.
Read White PaperATX GainMaker-Compatible Amplifiers
If you’re in the market for GainMaker-compatible HFC amplifiers, there’s only one Real McCoy. Accept no substitutes!
Read Blog2020 Imagination Theater
Watch the replay of the Imagine Zone Presentation to learn more about building the HFC Network of the future today.
Watch VideoGeneral Station Performance
|
MEASUREMENT |
UNITS |
FORWARD |
REVERSE |
|
|---|---|---|---|---|
|
PASS BAND |
MHz |
54-1218 |
5-42/85 or 204 |
|
|
AMPLIFIER TYPE |
– |
GaN |
GaAs HBT |
|
|
FREQUENCY RESPONSE(2) |
dB |
±0.5 |
±0.5 |
|
|
AUTO SLOPE AND GAIN RANGE |
dB |
±5.8 |
– |
|
|
RETURN LOSS |
dB |
16 |
16 |
|
|
MAXIMUM AC THROUGH CURRENT (Continuous) |
Amps |
15 |
– |
|
|
MAXIMUM AC THROUGH CURRENT (Surge) |
Amps |
25 |
– |
|
|
HUM MODULATION @ 15A (Over specified frequency range) |
dB |
60 (Fmin-1002MHz) 55 (1002-1218MHz |
55 (5-10MHz 60 (10-FmaxMHz |
|
|
TEST POINTS (± 0.75 dB) |
dB |
-20 |
-20 |
|
|
MEASUREMENT |
FREQUENCY MHz |
UNITS |
FORWARD |
|---|---|---|---|
|
REFERENCE OUTPUT LEVEL @ |
1218 |
dBmV |
49 |
|
258 |
34 |
||
|
105 |
32 |
||
|
54 |
31 |
||
|
REFERENCE OUTPUT TILT(1) |
54-1218 |
dB |
18 |
NOTE
1. Reference output tilt is specified with a 12 dB EQ in the interstage. The remaining EQ is installed at the input.
2. Mid-split 85/102, 102 MHz to 105 MHz roll-off of <1.0 dB. Intended to support lower modulation signals such as OOB.
Unless otherwise noted, specifications reflect typical performance and are referenced to 68°F (20°C). Specifications are based upon measurements made in accordance with SCTE/ANSI standards (where applicable), using standard frequency assignments.
Forward Station Performance
|
MEASUREMENT |
UNITS |
AUTO/THERMAL WITH 12.0 dB I/S EQ |
|---|---|---|
|
OPERATIONAL GAIN (Minimum)(1) |
dB |
48 |
|
INTERNAL TILT (± 0.5 dB) @ 54-1218 MHz (2) |
dB |
19 |
|
NOISE FIGURE (1) |
dB |
8.5 |
|
BER |
dB |
<1E-6 |
|
CCN(3) |
dB |
49 |
|
MER(3) |
dB |
49 |
NOTE:
1. Forward gain and noise figure measured with 0 dB input EQ and 1 dB input pad. Thermal and AGC module. AUX2 port gain 47.5dB.
2. All digital loading. 49dBmV QAM at 1218MHz, 18dB tilt (54 – 1218 MHz)
3. Distortion performance at reference output levels and tilt. Corrected with source performance backed out.
Unless otherwise noted, specifications reflect typical performance and are referenced to 68°F (20°C). Specifications are based upon measurements made in accordance with SCTE/ANSI standards (where applicable), using standard frequency assignments.
Reverse Station Performance
|
MEASUREMENT |
UNITS |
||
|---|---|---|---|
|
OPERATIONAL GAIN (Minimum) @ 42MHz (1) |
dB |
21.6 |
|
|
OPERATIONAL GAIN (Minimum) @ 85MHz (1) |
dB |
23.8 |
|
|
OPERATIONAL GAIN (Minimum) @ 204MHz (1) |
dB |
27.2 |
|
|
NOISE FIGURE (1) |
dB |
12 |
|
|
RECOMMENDED INPUT LEVEL 42MHz / 85MHz / 204MHz |
dBmV/6.4MHz |
16 / 13 / 9 |
|
|
dBmV/Hz |
-52 / -55 / -59 |
||
|
RECOMMENDED OUTPUT LEVEL 42MHz / 85MHz / 204MHz |
dBmV/6.4MHz |
43 / 40 / 36 |
|
|
dBmV/Hz |
-25 / -28 / -32 |
||
|
MEASUREMENT |
FREQUENCY (MHz) |
UNITS |
|
|
NPR/Dynamic Range (2) |
42 |
dB |
50/22 |
|
85 |
dB |
50/19 |
|
|
204 |
dB |
50/14.5 |
|
NOTE:
1. Reverse gain and noise figure for station with 0 dB reverse input pad, 0 dB reverse output EQ, and 1 dB output pad.
2. See NPR Chart
Unless otherwise noted, specifications reflect typical performance and are referenced to 68°F (20°C). Specifications are based upon measurements made in accordance with SCTE/ANSI standards (where applicable), using standard frequency assignments.
NPR Curve
Station Delay Characteristics (42/54)
|
FORWARD (Chrominance to Luminance Delay) |
REVERSE (Group Delay in 1.5MHz bandwidth) |
||
|---|---|---|---|
|
FREQUENCY (MHz) |
DELAY (ns) |
FREQUENCY (MHz) |
DELAY (ns) |
|
55.25 to 58.83 |
39 |
5.0 to 6.5 |
60 |
|
61.25 to 64.83 |
15 |
6.5 to 8.0 |
22 |
|
67.25 to 70.83 |
10 |
8.0 to 9.5 |
12 |
|
77.25 to 80.83 |
5 |
37.5 to 39.0 |
20 |
|
39.0 to 40.5 |
32 |
||
|
40.5 to 42.0 |
50 |
||
Station Delay Characteristics (85/102)
|
FORWARD (Chrominance to Luminance Delay) |
REVERSE (Group Delay in 1.5MHz bandwidth) |
||
|---|---|---|---|
|
FREQUENCY (MHz) |
DELAY (ns) |
FREQUENCY (MHz) |
DELAY (ns) |
|
109.275 to 112.855 |
15 |
5.0 to 6.5 |
60 |
|
115.275 to 118.855 |
10 |
6.5 to 8.0 |
22 |
|
121.2625 to 124.8425 |
8 |
8.0 to 9.5 |
12 |
|
127.2625 to 130.8425 |
5 |
80.5 to 82.0 |
10 |
|
82.0 to 83.5 |
17 |
||
|
83.5 to 85.0 |
21 |
||
Station Delay Characteristics (204/258)
|
FORWARD (Chrominance to Luminance Delay) |
REVERSE (Group Delay in 1.5MHz bandwidth) |
||
|---|---|---|---|
|
FREQUENCY (MHz) |
DELAY (ns) |
FREQUENCY (MHz) |
DELAY (ns) |
|
259.2625 to 262.8425 |
10 |
5.0 to 6.5 |
60 |
|
265.2625 to 268.8425 |
8 |
6.5 to 8.0 |
22 |
|
271.2625 to 274.8425 |
7 |
8.0 to 9.5 |
12 |
|
277.2625 to 280.8425 |
5 |
199.5 to 201.0 |
6 |
|
201.0 to 202.5 |
5 |
||
|
202.5 to 204.0 |
8 |
||
|
Station Powering Data |
GainMaker® Compatible High Gain Dual System Amplifier |
|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
I DC (Amps) |
AC VOLTAGE |
|||||||||||||
|
90 |
85 |
80 |
75 |
70 |
65 |
60 |
55 |
50 |
45 |
40 |
35 |
|||
|
THERMAL |
1.53 |
AC Current (A) |
0.67 |
0.69 |
0.70 |
0.71 |
0.73 |
0.76 |
0.85 |
0.90 |
0.96 |
1.04 |
1.17 |
1.33 |
|
Power (W) |
41.5 |
41.4 |
41.2 |
41.1 |
41.0 |
40.9 |
40.8 |
40.7 |
40.5 |
40.6 |
40.8 |
40.8 |
||
|
AGC |
1.59 |
AC Current (A) |
0.70 |
0.72 |
0.73 |
0.75 |
0.76 |
0.79 |
0.89 |
0.95 |
1.01 |
1.10 |
1.22 |
1.39 |
|
Power (W) |
43.3 |
43.3 |
43.0 |
42.9 |
42.7 |
42.6 |
42.6 |
42.5 |
42.6 |
42.5 |
42.5 |
42.7 |
||
NOTE:
Data is based on stations configured for two-way operation. AC currents specified are based on measurements made with typical CATV-type ferroresonant AC power supply (quasi-square wave) and GigaXtend System Amplifier power supply (2.5A, 24 VDC).
DC supply has a user-configurable 30V, 40V, or 50 VAC under voltage lockout circuit. Default setting is 30 VAC. Under-voltage lockout may be selected by changing the position of the lockout jumper.
|
PHYSICAL & ENVIRONMENTAL |
|
|---|---|
|
OPERATING TEMPERATURE |
-40-140°F (-40-60°C) |
|
MECHANICAL |
|
|
HOUSING (LxHxD) |
17.3 in. x 7.2 in. x 7.8 in. (439.4 mm x 182.9 mm x 198.1 mm) |
|
WEIGHT |
|
|
HOUSING WITH POWER SUPPLY |
13 lb, 7 oz (6.1 kg) |
|
MODULE |
5 lb, 5 oz (2.4 kg) |
|
Part Number |
Description |
|---|---|
|
1.2GHz High Gain Dual Station w/ Coated Housing,PS, CB, TPA, Launch Amp |
|
|
GAGMSADS45H |
GMC 1.2GHz, HGD, 42/54, D-AGC711, Full Station w/ PS |
|
GAGMSADS4TH |
GMC 1.2GHz, HGD, 42/54, Thermal, Full Station w/ PS |
|
GAGMSADS85H |
GMC 1.2GHz, HGD, 85/102, CB, PS, CTD HSG, TPA, D-AGC711 |
|
GAGMSADS8TH |
GMC 1.2GHz, HGD, 85/102, CB, PS, CTD HSG, TPA, Thermal |
|
GAGMSADS25H |
GMC 1.2GHz, HGD, 204/258, CB, PS, CTD HSG, TPA, D-AGC71 |
|
GAGMSADS2TH |
GMC 1.2GHz, HGD, 204/258, CB, PS, CTD HSG, TPA, Thermal |
|
1.2GHz High Gain Dual Launch Amp Only |
|
|
GAGMSADS45 |
GMC 1.2GHz, HGD, 42/54, CB, LA, D-AGC711 |
|
GAGMSADS4T |
GMC 1.2GHz, HGD, 42/54, CB, LA, Thermal |
|
GAGMSADS85 |
GMC 1.2GHz, HGD, 85/102, CB, LA, D-AGC711 |
|
GAGMSADS8T |
GMC 1.2GHz, HGD, 85/102, CB, LA, Thermal |
|
GAGMSADS25 |
GMC 1.2GHz, HGD, 204/258, CB, LA, D-AGC 711 |
|
GAGMSADS2T |
GMC 1.2GHz, HGD, 204/258, CB, LA, Thermal |
|
Part Number |
Description |
|---|---|
|
Required Accessories (GM Compatible) |
|
|
GAGM-PAD-1.2G-a= |
1.2GHz PAD (Multi=10)(a=dB: 00,1.0,2.0,..20.0) – 1 required for forward (1 input) – 1 required for AGC, if applicable* – 1 required for reverse (1 output) *To determine AGC pad value, subtract 34dB from the design value main port RF output level at the AGC pilot frequency |
|
Forward Path Plug In Conditioners (GM Compatible) |
|
|
GAGM-EQC-1.2G-a= |
1.2GHz FWD EQ (Multi=10)(a=dB: 0,1.5,3,..30) |
|
GAGM-EQL-1.2G-a= |
1.2GHz FWD LIN EQ (Multi=10)(a=dB: 1.5,3,..24) |
|
GAGM-EQIN-1.2G-a= |
1.2GHz INV EQ (Multi=10)(a=dB: 1.5,3,..21) |
|
GAGM-EQC-1G-a= |
1GHz Fwd EQ (Mult=10)(a=dB: 0,1.5,3,…30) |
|
GAGM-EQIN-1G-a= |
1GHz Inverse EQ (Mult=10)(a=dB: 1.6,3.3,4.9,6.5,8.1,9.8,11.4,13,14.6,16.2) |
|
Other Plug In Conditioners (GM Compatible) |
|
|
GAGM-EQREV-42M-a= |
Rev EQ,42MHz (Multi=10)(a=dB: 1,2,3,..12) |
|
GAGM-EQREV-85M-a= |
Rev EQ,85MHz (Multi=10)(a=dB: 1,2,3,..12) |
|
GAGM-EQREV-204M-a= |
Rev EQ,204MHz (Multi=10)(a=dB: 1,2,3,..12) |
|
GAGM-EQREVT-42M-a |
Rev Therm EQ,42MHz(a=dB: 1,2,3,..8) |
|
GAGM-PAD-1.2G-75= |
1.2GHz 75ohm Terminator (Multi=10) |
|
MISC Accessories (GM Compatible) |
|
|
GAGM-AGC-QAM-711 |
GMC QAM AGC 711MHz (Multi=10) |
|
GAGMSA-FUSE-SK |
GMC SA Fuse Shunt Kit (Multi=10) |
|
GAGMSA-LIDPS= |
GMC 1.2 GHz SA Housing Lid w/ Cable, ladder, PS |
|
GAGMSA-LID= |
GMC 1.2 GHz SA Housing Lid w/ Cable and ladder |
|
GAGMSA-HSG-1.2G= |
GMC 1.2 GHz SA Housing (with cable,ladder, seizure ports. No PS or amp module) |
|
GAGMSA-PS-1.2G= |
GMC 1.2 GHz SA Power Supply, 24V-2.5A (Multi=10) |
|
GAGM-CRWBR-S |
GMC CROWBAR SIDACTOR (Multi=10) |
|
GAGMLE-PWRKIT-1.2G |
GMC AC Power Pack Kit, 120VAC, Universal LE and SA w/ wall bracket (Multi=10) |
|
GAGM-1.2G-LONGF81 |
GMC 1.2 GHz Long Test Point Adapter (Multi=10) |
NOTE:
GAGMSA Amplifiers do not ship with plug-ins installed in the following positions, because the user must choose values based on installation levels (see user manual): Forward Input PAD, Forward Input EQ, AGC PAD and Signal Director. Reverse Output Pad and Reverse Output EQ. Other positions come factory installed, based on model of SA ordered.
** unless otherwise mentioned, all new housings and housing parts are coated aluminum, and all plugins are compatible with legacy 1GHz or 1.2GHz GainMaker® and GigaXtend system amplifiers
Cisco, the Cisco logo, Cisco Systems, the Cisco Systems logo, and GainMaker are trademarks or registered trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries.
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