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1. Functional Description
2. Model 3470 BTR Unit Specifications
Model 3470 BTR
Beacon Tracking Receiver
A tracking receiver for antenna step tracking
or automatic uplink power control
1.1 The Model 3470 BTR is a fully frequency agile satellite receiver designed
to provide a DC reference voltage proportional to the received signal level of a
satellite beacon or other SCPC carrier. The receiver has a pre-detection
bandwidth of 50 KHz. Frequency selection of the desired carrier is
accomplished from the front panel or by remote serial link. The minimum step
size is 10 kHz. Programming instructions are outlined in the back section of
this manual.
Input Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.5 to 72.5 MHz
Input Level . . . . . . . . . . . . . . . . . . . . . . . . . > -60 dBm, front panel adjustable
Input Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 ohm
Frequency Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Local or remote over
Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 dB C/N for acquisition
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Local/Alarm Display
AFC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 KHz,
Noise Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 KHz
Output Level . . . . . . . Internal op amp scalable 0 to 10 VDC,
Tracking Response . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 volts change for 1 dB
MECHANICAL:
Input Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . BNC (Female) 50 Ohm
Output Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . Modular socket & plug
M&C Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DB-9, Female
M&C Interface . . . . . . . . . . . . . . . . . . RS-232 or RS-485 (factory configured)
DIMENSIONS: . . . . . . . . . . . . . . . . . . . . . . . . . Single 19" rack unit, 16" deep
POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110/230 VAC 40-60 Hz
Model 3470 BTR Beacon Tracking Receiver
+ 2.5 MHz on 10 KHz steps
< 1 dB C/N for carrier lock
Form-C relay contacts
7.5VDC NOMINAL
change of input level.
auto-sensing
1
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Summary of Contents for Beacon 3470 BTR
- Page 1 1. Functional Description 1.1 The Model 3470 BTR is a fully frequency agile satellite receiver designed to provide a DC reference voltage proportional to the received signal level of a satellite beacon or other SCPC carrier. The receiver has a pre-detection bandwidth of 50 KHz.
- Page 2 The number above the cursor is the number which will change when the + or - key is pressed. When you release the CUR key, the frequency is updated internally. If an invalid frequency is selected, the colon [:] after FREQ will blink. Model 3470 BTR Beacon Tracking Receiver...
- Page 3 3 - COM Alarm relay common 2 - N/O Normally open relay contact. Open with respect to common when unit is LOCKED to beacon. 1 - N/C Normally closed relay contact. Closed with respect to common when unit is LOCKED to beacon.
- Page 4 If the correct address is not transmitted the If an incorrect command string is sent, the unit will not respond. unit will not respond Model 3470 BTR Beacon Tracking Receiver...
- Page 5 5.2 Plug the AC cord which is provided with the unit into the rear mounted receptacle. Plug the male end of the power cord into a suitable 90-260 VAC, 47-60 HZ power outlet. The MODEL 3470 BTR 's power supply automatically detects AC input voltage.
- Page 6 Installation and Alignment Model 3470 BTR Beacon Tracking Receiver...
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Page 7: Troubleshooting Guide
7.5 volts. Note: there are no internal adjustments within the receiver. If it is determined that the unit has failed, refer to the Satellite Systems Corporation Repair Return Policy which follows. Model 3470 BTR Beacon Tracking Receiver... - Page 8 SSC disclaims liability for any incidental or consequential damages. NOTE: Field alignment or repairs other than those provided for within this user instruction manual may void the equipment warranty and should be authorized by a factory representative prior to implementation. Model 3470 BTR Beacon Tracking Receiver...
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Page 9: Ec Declaration Of Conformity
I/O is required. These cables must be double-shielded from end-to-end, ensuring a continuous ground shield. <HAR> Type of power cord required for use in the European Community CAUTION: Double-pole/Neutral Fusing ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung Model 3470 BTR Beacon Tracking Receiver... - Page 10 Model 3470 BTR Beacon Tracking Receiver Instruction Manual...