RF Technology RF-715D User Manual 15382
RF Technology Inc 15382
8
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| Document ID | 15382 |
| Application ID | 5Nbu1oeZlcb02Qa1rdEb8Q== |
| Document Description | 8 |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 5.24kB (65537 bits) |
| Date Submitted | 1998-12-09 00:00:00 |
| Date Available | 1999-02-23 00:00:00 |
| Creation Date | 2001-07-11 11:05:24 |
| Producing Software | Acrobat Distiller 4.0 for Windows |
| Document Lastmod | 2001-07-11 11:05:25 |
| Document Title | 15382.pdf |
| Document Author: | jsoscia |
I-l lI-I RFTECHNOLOGY, INC. 16 TESTA PLACE TEL: 203-866—4283 SO. NORWALK, CT 08854-4813 USA FAX: 203-853-3513 RF-715D AMPLIFIER MANUAL INNOVATORS IN MICROWAVE COMMUNICATIONS I RF TECHNOLOGY, INC. RF-715D AMPLIFIER DESCRIPTION The RF-715D amplifier consists ofa regulator board and RF amplifier boards mounted in a machined aluminum weatherproof housing. The RF-715D amplifier is not field repairable due to the expertise and test equipment required to efiectively make repairs A general description of the RF amplifier section and the operation of the regulator circuit are presented for information purposes REQULATOR: The regulator regulates the input voltage (+106 to +18VDC) to +10,0V and generates a —5V voltage A +5V regulator (U2) provides the reference voltage for the regulator consisting of USA and Q1. The regulated voltage of+10V is set by R6, The +5v output of U2 is also fed to a dc-dc converter 1C (U1) through a filter consisting ole, C19 and C20. The 45V output ofU] is used to control the current in the microwave FET transistors. A circuit (U3B) is used to turn offthe regulator transistor Q1 until the —5V is present or in the event ofthe loss of this negative voltage. This circuit is required because a microwave FET transistor can be damaged if the +10V were to be applied before the current regulating —5V is available. The regulator circuit board also contains a detector amplifier consisting ofU4A and U4B that amplifies the RF detector output to level used for indicating the presents of an RF output signal. A mute input provision is provided on the regulator board for muting the RF output when a transmitter is placed in the standby mode RF AMPLIFIER“ The RF amplifier is a two stage amplifier with input, output and interstage isolators. The input and output isolators provide an input and output impedance match and reduce the possibility of instability that could be caused by an external impedance mismatch The circuit boards are a microwave substrate onto which is etched a computer aided designed microstrip circuit. Incorporated in the microstrip circuit design is a coupler for the RF output detector and a lowpass filter The amplifier is operated in the saturated mode and requires an input level of 10 to 40mW (+10 to +16dBm) to achieve the rated output level of SW (+39dBm). lI-I RFTECHNOLOGY, INC. RF-7 I 5D AMPLIFIER INSTALLATION When installing an RF-7l 5D amplifier caution has to be taken so that the heat generated within the amplifier is removed via a good thermal connection between the amplifier and the surface it is being mounted to The surface the amplifier is to be mounted to has be smooth and free of surface irregularities and large enough to provide a heat sink for the amplifier Ideally this surface should be free of coatings (paint, etc.) Thermal compound has to be used between the amplifiers mounting surface and the surface it is being mounted to. An optional heat sink is available for certain applications when a mounting surface is not available that will provide an adequate heat sink for the amplifier. When installing an RF-7l 5D outdoors the amplifier has to be mounted so that the connectors are facing down In ENG truck applications the connectors are to be facing down during operation and to the rear of the truck then the mast is in the stowed position. Four 10-32 threaded holes are provided for mounting the amplifier refer to the RF»7ISD outline drawing number AS4855 for the hole patterns NOTE: The RF-7I 5D amplifier can be damaged if it is operated Without an adequate heat sink and/or air flow Please consult the factory if you have any questions or concerns on installing the RF-7I 5D amplifier. RF—715D AMPLIFIER SPEQ IFICATIQNS Frequency Range 5925 to 7IZSGHz, RF Power Output: 8Watts (+39dBm) RF Power Input Range: IO to 40mW (+10 to +16dBm) DC Input voltage Range: +106 to +18VDC DC Current: 4Amps at +12V’DC Operating Temperature Range: -30 to +50 Deg. C ( -22 to +122 Deg. F)
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