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The R.L. Drake model DA7533, DA7543, DA8632 and DA8642 broadband distribution amplifiers are designed for indoor use in both residential and commercial buildings where RF signal distribution in the frequency range of 49 to 750 or 860 MHz is required. Each model incorporates a push-pull hybrid input preamp and a power doubled hybrid output amplifier to provide a very low distortion signal for a cable television "drop", the output of an SMATV headend, or a small CATV headend. The Gain and Slope controls both have a range of 10 dB minimum and operate between the preamp hybrid and the output hybrid to maintain a low noise figure over a wide range of gain and slope settings.
Double-sided, plated through hole, glass epoxy printed circuit boards, and SMT construction are used for low losses and maximum reliability.
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The unit features three user selectable
return path choices (internal jumper selectable):
1) No return path. 2) Passive return path with variable 10 dB attenuator. 3) Built in active return path. |
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Input and output test connectors are provided for convenient monitoring of the signal path. The amplifier circuitry is designed for maximum stability, low distortion, low noise figure, and is protected in a rugged aluminum housing.
The unit operates from a nominal 26 VAC provided by the supplied 120 VAC, 60 Hz input AC Adapter.
| You may download the owners manual in Adobe® Reader format by clicking here. | |
| If you don't have the Adobe® Reader, click here. |
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Specifications for
the DA7533 and DA7543: |
DA7533 | DA7543 |
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Frequency Coverage
(forward path): |
49 to 750 MHz. | 49 to 750 MHz. |
| Gain (forward path): | 33 dB. | 43 dB. |
| Noise Figure: | 7 dB maximum. | 6.5 dB maximum. |
| Return Loss, Input and Output: | 14 dB. | 14 dB. |
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Input Level (maximum without using fixed input attenuator): |
+20 dBmV. | +10 dBmV. |
| Optimum Input Level Range: | +10 dBmV to +15 dBmV. | +0 dBmV to +5 dBmV. |
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Forward Path Nonlinear Distortions: |
(110 channel loading, +44 dBmV output per channel) | |
| Composite Triple Beat: | - 58 dB. | - 58 dB. |
| Composite Second Order: | - 58 dB. | - 58 dB. |
| Cross-modulation: | - 62 dB. | - 62 dB. |
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Specifications for the DA8632 and DA8642: |
DA8632 | DA8642 |
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Frequency Coverage
(forward path): |
49 to 860 MHz. | 49 to 860 MHz. |
| Gain (forward path): | 32 dB. | 42 dB. |
| Noise Figure: | 7.5 dB maximum. | 7 dB maximum. |
| Return Loss, Input and Output: | 12 dB. | 12 dB. |
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Input Level (maximum without using fixed input attenuator): |
+18 dBmV. | +7 dBmV. |
| Optimum Input Level Range: | +7 dBmV to +12 dBmV. | -3 dBmV to +2 dBmV. |
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Forward Path Nonlinear Distortions: |
(129 channel loading, +40 dBmV output per channel) | |
| Composite Triple Beat: | - 60 dB. | - 60 dB. |
| Composite Second Order: | - 58 dB. | - 58 dB. |
| Cross-modulation: | - 64 dB. | - 64 dB. |
| Specifications common to all models: | ||
| Forward Gain Adjustment Range: | 10 dB minimum. | |
| Slope Control Adjustment : | 10 dB minimum. (54 MHz) | |
| Input/Output Impedances: | 75 Ohms. | |
| Return Loss, Input and Output: | 14 dB. | |
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Monitor Port Levels,
Input and Output: |
- 30 dB. | |
| Fixed Input Attenuator: | Plug-in (SXP type) available. | |
| Fixed Input Equalizer: | Plug-in (QSA type) available. | |
| Hum Modulation: | - 70 dB. | |
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Frequency Coverage
(return path): |
5 to 36 MHz. | |
| Active Return Path Gain: | 20 dB minimum. | |
| Return Path Input Attenuator: | 0 to 10 dB adjustable. | |
| RF Shielding: | Leakage complies with FCC Part 76. | |
| Power Requirement: | 26 VAC from supplied transformer with six foot amplifier-to-transformer cable. | |
| Operating Temperature Range: | - 20° to + 60° C. | |
| Power Transformer: | Supplied transformer has 120 VAC/60 Hz ±10% input requirement at 35 W. Output is 26.3 VAC with screw terminals for attaching power cable from amplifier. Supplied 120 volt 3-wire line cord is six feet long. | |
| Size: | 10.25" (26 cm) L x 7.25" (18.4 cm) W x 2.75" (7 cm) D. | |
| Weight: | 6 lbs. 12 oz. (14.9 Kg), including AC adapter. | |
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R.L. Drake, LLC |
Sales: 937-746-4556 |
