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Zephyr 700 Series, Руководство пользователя

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Zephyrus 700 SCPC Satellite Receiver

Specifications and Typical Operating Criteria

PHYSICAL:

General:

Front panel is sloped back for easy viewing and data entry.
Analog meters for signal values. Keypad entry tuning.  Illuminated
LCD readout of frequencies and operating status.  Audio level
controls on front panel.

No. of carriers:

One basic with front panel devices included for optional second
channel.

Weight:

7½ pounds

Size:

3½" high,  11½" deep,  16¾" wide (19" with rack ears)

Operating range:

4° - 38° C,  non-condensing

ELECTRICAL:

Input Power

105-125 VAC, 60 Hz, <30 watts (240 VAC 50Hz available)

Power to LNB

18 VDC, electronically shut down when shorted

OPERATING: 

Satellite Freq.

3700-4200 MHz  or 11700-12200  (to match tuning logic)
Other frequencies available

LNB frequency

950-1450 MHz

Input signal level

-40 dbm max to -85 dbm min typical

SCPC frequencies

50-90 MHz

RF bandwidth

70 kHz for 7.5 kHz audio,  140 kHz for 15 kHz audio

Audio Bandwidth

50 - 15,000 Hz or 50 - 7,500 Hz, per order

Freq. response

within ±1 dB over operating range

Companding

2:1 or 3:1, per order

Noise Floor

-70 db (2:1),  -90db (3:1) typical

Distortion

<1% @ 1 kHz

Output

+18 dBm max balanced  (level meters internally adjustable)

ZEPHYRUS ELECTRONICS, LTD

168 South 122nd East Avenue, Tulsa, Oklahoma 74128-2405 USA

918-437-3333   Fax 918-438-7322

MA700SPC.SAM

SECTION 1, PAGE 2

Содержание 700 Series

Страница 1: ...ONICS LTD 700 SERIES SCPC Satellite Receivers ZEPHYRUS ELECTRONICS LTD 168 South 122 East Avenue Tulsa OK 74128 2405 USA Phone 918 437 3333 Fax 918 438 7322 Web site http www big z com Email support big z com ...

Страница 2: ...rt of our overall quality control It will also help both of us if you will get an RMA number from the service technician you are talking with We will certainly accept products for service without a number but any notes that the tech makes in his phone calls with you might not get tied to your unit when it gets here Our Limited Warranty is as follows We will fix or replace any product that is defec...

Страница 3: ...eration and calibration control information Details of Readout Display and Keypad Data Entry SECTION 3 Installation of the 700 Receiver system Dish and polarity optimization Notes on signal quality problems SECTION 4 SYSTEM OPERATION AND CUSTOMIZATION Components to make up a 700 system External connections Locations and use of customer usable jumpers and internal adjustments MA700TBL SAM ZEPHYRUS ...

Страница 4: ...r numbering system They are displayed on the top line of the backlit alphanumeric readout The bottom line of the readout gives the results of the fault monitoring duties of the processor The front panel of the 700 frame is sloped to make it easy to read the LCD display and enter data through the keypad v The audio meters are backlit with LED s low brightnes level is normal Light is red if the chan...

Страница 5: ...0 VAC 50Hz available Power to LNB 18 VDC electronically shut down when shorted OPERATING Satellite Freq 3700 4200 MHz or 11700 12200 to match tuning logic Other frequencies available LNB frequency 950 1450 MHz Input signal level 40 dbm max to 85 dbm min typical SCPC frequencies 50 90 MHz RF bandwidth 70 kHz for 7 5 kHz audio 140 kHz for 15 kHz audio Audio Bandwidth 50 15 000 Hz or 50 7 500 Hz per ...

Страница 6: ...rols below each meter An internal jumper at the very front of the audio demod circuit board permits an alternate Zero VU setting to indicate 8 dBm out Custom zero settings can be set internally also See AUDIO OUTPUTS in Section 4 System Operation and Customization Audio squelch is activated by the presence of a high audio noise level Whenever squelch occurs a red LED illuminates the meter face Aud...

Страница 7: ...equency see DISPLAY above four digits for audio or five digits for a transponder Ku transponder frequencies are five digits and are entered directly C band transponder frequencies are entered as four digits such as 3760 followed by a 3760 Caution If a wrong number is punched in step 2 it can be cancelled by depressing the Y key However once you have started entering any frequency that entry must b...

Страница 8: ...e point in the sky where you expect to find the satellite If you don t know where this is give us a call with the name of the satellite and your location and we can give you the pointing instructions We have a short computer satellite locator file called LOOKANGLE that we will be glad to pass on if you would like If you are properly polarized you will hear the program audio as you zero in on the s...

Страница 9: ...e dish It will be dead center when this happens Notes on Cable RG 59 cable is usually OK for runs up to 125 to 150 feet Longer runs require a heavier cable such as RG 6 or preferably RG 11 The DC resistance of light duty cables eats up the supply voltage to the LNB on long runs Any cable you use must have substantial braid Foil only outer conductors are OK to run TV signals around your house but n...

Страница 10: ...nverter connector Besides providing the input signal to the 700 it provides 18 volt DC power to the LNB This power output is protected against short circuit with a crowbar circuit that shuts down power in the event of a momentary flow of excess current Once a short has occurred it may be necessary to completely open the LNB cable feed or momentarily disconnect primary power before the crowbar circ...

Страница 11: ...he 3 pin header J 10 Move the shorting plug from pins 2 and 3 over to pins 1 and 2 If a level other than 8 or 0 is desired change the output level of the receiver to the level desired using the front panel level adjustment Note meter calibration pots VR5 and VR6 at each end of the header Each pot sets the calibration of the respective end of the header pins These pots can be adjusted to calibrate ...

Страница 12: ...System Operation MA700SYS SAM SECTION 43 Figure 1 Channel 1 Receiver Board Channel 2 is similar but less tuner ...

Страница 13: ...MA700SYX SAM Figure 2 700 Receiver Back Panel SECTION 4 PAGE 4 ...

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