GainMaker High Output High Gain Balanced Triple (HGBT) System Amplifier 5-85/105-1002 MHz Data Sheet
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Description
The Cisco GainMaker® broadband amplifier platform includes a variety of RF amplifiers that address the divergent needs of today’s broadband networks. All GainMaker amplifiers provide superior 2-way performance and reliability combined with a user-friendly layout. All share common plug-in accessories and perform to 1 GHz in the forward path. The System Amplifiers in this family provide multiple forward RF output ports, while the Line Extenders provide a single forward RF output port.
GainMaker System Amplifiers use gallium arsenic field-effect transistor (GaAsFET) technology in the interstage and output gain stages for improved distortion performance.
The GainMaker High Output System Amplifier modules are capable of higher output levels than standard GainMaker System Amplifier modules, and are mechanically compatible with previous System Amplifier II, II+, III, and GainMaker housing bases. The DC power supply is modular and located in an updated housing lid for easy access. All GainMaker System Amplifier modules are factory configured with reverse amplifier, diplex filters, thermal compensation circuit, forward interstage pads, and interstage equalizer to help ensure optimal performance. Optional single-pilot Automatic Gain Control (AGC) configurations are also available.
The GainMaker High Output High Gain Balanced Triple (HGBT) System Amplifier (Figure 1) has three forward outputs and is ideally suited for providing high (bridger)-level RF to the feeder network.
Features
● Capable of higher output levels than standard GainMaker amplifiers
● Common RF test points for forward output and reverse injection simplify reverse balancing
● Increased forward gain to facilitate drop-in bandwidth extensions without respacing
● High-performance GaAsFET gain stage technology
● Fixed-value, plug-in accessories are common to all GainMaker products
● 60 and 90 volt AC powering capability
● 15 ampere current capacity (steady state) and 25 ampere surge survivability
● Optional 3-state reverse switch (on/off/-6 dB) allows each reverse input to be isolated for noise and ingress troubleshooting (status monitoring required)
● AGC has thermal backup, which eliminates disruptive RF output variation in the event of pilot loss
● QAM pilot AGC now available in addition to existing analog carrier AGCs
● Improved hum modulation
● Plug-in, self-contained diplex filters
● Modular high-efficiency power supply allows simplified maintenance
● Reverse input pad and RF test point for each reverse input port allow optimum reverse path design and alignment
● Directional coupler RF test points provide best accuracy
● Surge-resistant circuitry makes sure of gain stage protection without fuses or other nuisance failure-causing devices
Specifications
Table 1. General Station Performance
Tables 1 through 6 list the specifications for the Cisco GainMaker 1002 MHz High Output HGD System Amplifier 5‑85/105-1002 MHz.
| General Station Performance |
Units |
Forward |
Reverse |
Notes |
| Pass Band |
MHz |
105-1002 |
5-85 |
|
| Amplifier Type |
- |
GaAs FET |
PP |
|
| Frequency Response |
dB |
± 0.5 |
± 0.5 |
|
| Auto Slope and Gain Range |
dB |
± 5.5 |
n/a |
|
| Return Loss |
dB |
16 |
16 |
7 |
| Max AC Through Current (Continuous) |
A |
15 |
- |
|
| Max AC Through Current (Surge) |
A |
25 |
- |
|
| Hum Modulation @ 12 A |
dB |
70 (105-870 MHz) 60 (870-1002 MHz) |
60 (5-10 MHz) 70 (11-85 MHz) |
|
| Hum Modulation @ 15 A |
dB |
65 (105-870 MHz) 60 (870-1002 MHz) |
60 (5-10 MHz) 65 (11-85 MHz) |
|
| Test Points (± 0.5 dB) |
dB |
-20 |
-20 |
|
| Reference Output Level @ 1002 MHz 870 MHz 750 MHz 650 MHz 550 MHz 105 MHz |
dBmV
|
56.0 54.0 52.2 50.5 49.0 42.3 |
35 (@ 85 MHz)
35 (@ 5 MHz) |
|
| Reference Output Tilt (105-1002 MHz) |
dB |
13.7 |
- |
1 |
Table 2. Forward Station Performance
| Forward Station Performance |
Units |
Auto/Thermal |
Notes |
| Operational Gain (Minimum) |
dB |
41 |
2 |
| Internal Tilt (± 0.5 dB) |
dB |
13.8 |
3 |
| Noise Figure @ 54 MHz |
dB |
8.5 |
2 |
| Noise Figure @ 1 GHz |
dB |
8.0 |
2 |
| 73 NTSC Channels (CW) with Digital |
|
|
4 |
| Composite Triple Beat |
dB |
65 |
9 |
| Cross Modulation |
dB |
59 |
5, 9 |
| Composite Second Order (High Side) |
dB |
64 |
9 |
| Composite Intermodulation Noise (CIN) |
dB |
57 |
8, 9 |
Table 3. Reverse Station Performance
| Reverse Station Performance |
Units |
|
Notes |
| Operational Gain (Minimum) |
dB |
19.0 |
6, 7 |
| Internal Tilt (± 0.5 dB) |
dB |
-0.5 |
3 |
| Noise Figure |
dB |
12 |
6, 7 |
| 6 NTSC Channels (CW) |
|||
| Composite Triple Beat |
dB |
92 |
9 |
| Cross Modulation |
dB |
80 |
5, 9 |
| Composite Second Order (High Side) |
dB |
82 |
9 |
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.
Table 4. Station Delay Characteristics
| Station Delay Characteristics |
|||
| Forward (Chrominance to Luminance Delay) |
Reverse (Group Delay in 1.5 MHz bandwidth) |
||
| Frequency (MHz) |
Delay (ns) |
Frequency (MHz) |
Delay (ns) |
| 109.25 - 112.83 |
13 |
5.0 - 6.5 |
60 |
| 115.25 - 118.83 |
7 |
6.5 - 8.0 |
22 |
| 121.25 - 124.83 |
5 |
8.0 - 9.5 |
12 |
|
|
|
80.5 - 82.0 |
10 |
|
|
|
82.0 - 83.5 |
13 |
|
|
|
83.5 - 85.0 |
18 |
Table 5. Station Powering Data
| Station Powering Data |
||||||||||||||
| GainMaker High Output HGBT |
I DC (Amps) |
|
AC Voltage |
|||||||||||
| 90 |
85 |
80 |
75 |
70 |
65 |
60 |
55 |
50 |
45 |
40 |
35 |
|||
| Thermal |
2.21 |
AC Current (A) |
0.86 |
0.88 |
0.88 |
0.89 |
0.93 |
0.98 |
1.21 |
1.25 |
1.37 |
1.52 |
1.72 |
2.01 |
| Power (W) |
59.6 |
59.6 |
59.8 |
59.1 |
59.2 |
59.3 |
59.0 |
59.1 |
59.1 |
59.5 |
59.6 |
60.2 |
||
| AGC |
2.27 |
AC Current (A) |
0.87 |
0.90 |
0.90 |
0.92 |
0.95 |
1.01 |
1.24 |
1.26 |
1.39 |
1.54 |
1.75 |
2.05 |
| Power (W) |
60.7 |
61.2 |
61.2 |
60.6 |
60.4 |
61.2 |
60.6 |
60.6 |
60.7 |
60.9 |
61.5 |
62.0 |
||
| AGC with Status Mon. & Reverse Switch |
2.41 |
AC Current (A) |
0.91 |
0.94 |
0.94 |
0.97 |
1.01 |
1.08 |
1.34 |
1.38 |
1.50 |
1.64 |
1.90 |
2.25 |
| Power (W) |
64.7 |
65.2 |
64.9 |
65.0 |
64.6 |
64.2 |
64.7 |
65.1 |
65.0 |
65.2 |
65.0 |
65.9 |
||
Data is based on stations configured for 2-way operation. AC currents specified are based on measurements made with typical CATV type ferroresonant AC power supply (quasi-square wave) and GainMaker High Output System Amplifier power supply (2.5 A, 24 VDC, pn 4022846).
DC supply has a user-configurable 30 V, 40 V, or 50 VAC under voltage lockout circuit. Default setting is 30 V 40 V or 50 VAC under voltage lockout may be selected by changing the position of the lockout jumper.
Notes:
1. Reference output tilt is specified as “LINEAR” tilt (as opposed to “cable” tilt).
2. Forward Gain and Noise Figure measured with 0 dB input EQ and 1 dB input pad.
3. Down tilt, the effect of cable, is represented by a (-). Up tilt, the effect of equalization, is represented by a (+).
4. 73 CW NTSC channels loaded from 115 to 550 MHz. Digital refers to 550-1002 MHz loading with QAM carriers at -6 dB levels relative to analog video carrier levels.
5. X-mod (@ 15.75 kHz) specified using 100% synchronous modulation and frequency selective measurement device.
6. Reverse Gain and Noise Figure for station with 0 dB reverse input pad, 0 dB reverse output EQ, and 1 dB output pad.
7. Reverse Operational Gain, Noise Figure, and Return Loss are specified without reverse switch option. If switch is installed, reduce Gain by 0.5 dB, increase Noise Figure by 0.5 dB, and decrease Return Loss by 1 dB.
8. Composite Intermodulation Noise is a broadband noise-like distortion product associated with QAM loading.
9. Distortion performance at reference output levels and tilt. Consult Cisco Systems Engineering for CIN calculation.
Table 6. Environmental and Mechanical Specifications
| Environmental |
|
| Operating Temperature Range |
-40 -140°F (-40 - 60°C) |
| Mechanical |
|
| Housing Dimensions |
17.3 in. L x 7.2 in. H x 7.8 in. D 439.4 mm L x 182.9 mm H x 198.1 mm D |
| Weight
● Housing with power supply
● Module
|
12 lbs, 5 oz. (5.6 kg) 5 lbs, 5 oz. (2.4 kg) |
Ordering Information
The GainMaker Ordering Matrix provides ordering information for configured amplifier modules or stations. This page contains ordering information for required and optional accessories not included as part of a configured amplifier module or station. Consult your account representative or customer service representative for ordering assistance.
The required accessories described in Table 7 must be ordered separately (not included in GainMaker Ordering Matrix).
Table 7. Required Accessories
| Required Accessories |
Part Number |
| Plug-in Pads (attenuators) - Available in 0.5 dB steps from 0 to 20.5 dB
● 1 required for forward input
● 1 required for AGC, if applicable
*
● 4 required for reverse (3 input, 1 output)
* To determine AGC pad value, subtract 34 dB from the design value main port RF output level at the AGC pilot frequency |
589693 (0 dB) sequentially through 589734 (20.5 dB) |
| Plug-in Forward Cable Equalizer - Available in 1.5 dB steps from 0 to 30 dB at 1002 MHz
● 1 required for forward input
|
4007228 (0 dB) sequentially through 4007248 (30 dB) |
| Plug-in Reverse Cable Equalizer – Available in 1 dB steps from 0 to 12 dB at 40 MHz
● 1 required for reverse output - unless design value is 0 dB (0 dB EQ is provided)
|
712719 (0 dB) and 4036769 (1 dB) sequentially through 4036780 (12 dB) |
The optional accessories described in Table 8 may be ordered separately.
Table 8. Optional Accessories
| Optional Accessories |
Part Number |
| 24V Power Supply for GainMaker High Output HGD |
4026157 |
| 230 V AC Crowbar Surge Protector (plug-in, one per station) |
715973 |
| Plug-in Inverse Equalizer. Simulates cable equivalent tilts (creates tilt opposite that of equalizers). Use in place of forward input EQ as needed to maintain proper output tilt in short spaced locations. Available in approx. 1.6 dB “cable equivalent” steps from 1.6 to 16.2 dB. |
4007486 (1.6 dB) sequentially through 4007495 (16.2 dB) |
| Long Reach Test Point Adapter |
562580 |
| Status Monitoring Transponder – * see GainMaker Status Monitoring Transponder Data Sheet |
* |
The housing options described in Table 9 may be included with the product if ordered using the GainMaker Ordering Matrix. They may also be ordered separately.
Table 9. Housing Options
| GainMaker System Amplifier Housing – 1 required Housing includes housing base, lid, wiring harness, and 24 V power supply # 4022846. All Housings have 15 amp capacity. |
Part Number |
|
● Uncoated 4 port housing without external test point access
|
4026387 |
|
● Chromate Plated 4 port housing without external test point access
|
4026388 |
|
● Uncoated 4 port housing with external test point access
|
4026385 |
|
● Chromate Plated 4 port housing with external test point access
|
4026386 |
| GainMaker System Amplifier Housing Upgrade Kit - 1 required if upgrading an existing SA II, II+, or III housing to allow use of GainMaker System Amplifier modules. Includes a GainMaker System Amplifier housing lid, wiring harness, and 24 V power supply # 4022846. |
|
|
● Uncoated 4 port housing lid without external test point access
|
4026389 |
|
● Painted 4 port housing lid without external test point access
|
4026390 |
|
● Uncoated 4 port housing lid with external test point access
|
4026391 |
|
● Painted 4 port housing lid with external test point access
|
4026392 |
| Seizure Upgrade Kit – 1 required if upgrading an existing SAII or SAII+ housing base to allow use of GainMaker System Amplifier Modules. Includes high current (15 amp) rated seizure screws and anvils. |
548775 |
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