Zephyr 700 User Manual





Satellite Receivers


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

Thank you for using our equipment.We will do our best to

earn your continuing confidence in Zephyrus and our products. Any time you need information or help, give us a call at 918-437-3333 (US).

It's a good idea to look the equipment over for any shipping damage as soon as it is received. If damage is discovered, contact and file a claim with the freight company. They are responsible to you.

We hope it doesn't happen, but if you ever have a problem that requires you to send equipment back to us for repair or replacement, Please pack a note in with the device. Give us as much information as possible;-- what the problem is and anything you can tell us that might help solve it. Customer feedback is the last line and a very vital part 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 defective within One year (Australia) after you receive it. We won't cover damage from accident or misuse. Warranty is FOB the factory or our servicing distributor. Our responsibility is limited to repair or replacement only and no other expenses or consequential damages. No other warranties apply.

Whether your warranty has expired or not, customer support and assistance is the backbone of our business. Our managment has a background in broadcasting, so we understand the seriousness of "equipment down." We'll do all we can. --Your referral to a friend might even be our next sale!

We make quality affordable




Table of Contents


General Information


-An overview and summary description of the system


describing features and design philosophy.


-System specifications and typical operating criteria.


Front Panel Layout and Operation


-Meter operation and calibration, control information.


-Details of Readout Display and Keypad Data Entry.


Installation of the 700 Receiver system


-Dish and polarity optimization.


-Notes on signal quality problems.




-Components to make up a 700 system.


-External connections.


-Locations and use of customer usable jumpers and internal




168 South 122nd East Avenue

Tulsa, Oklahoma 74128-2405 USA

Pho 918 437-3333 Fax 438-7322


Operating the Zephyrus 700 Series

SCPC Satellite Receiver

General information

The 700 receiver system is contained in a 3½" frame and features microcomputer electronics that control and monitor operation of either one or two receiver modules and the LNB. Primary power is normally 117 vac with 240 volt units available. Rack mounting is optional.

v Input signal to the receiver is L band at 950-1450 MHz and is usually supplied by an LNB with ±50 kHz stability.


vA "relative" RF signal meter monitors amplitude of the carrier at the demodulator of the first audio channel. The position of the meter needle may be changed with the adjustment directly below the meter. Any variation from this setting will then be due to a change in the strength of the received signal. Therefore, it may be used for peaking the dish and/or day to day monitoring of system stability, such as dish movement or cable problems.

vFrequencies of the C or Ku band satellite and the SCPC frequency are entered through a keypad. --We use the satellite frequency, rather than a transponder number, because of the total lack of any industry standard relating to a transponder 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.

vThe audio meters are backlit with LED's (low brightnes level is normal). Light is red if the channel is in a signal failure (squelch) mode and is green in normal or squelch defeat operation.

vSquelch of the output audio signal is provided by circuits that listen for high noise levels. The squelch may be defeated with front panel switches located next to the audio meters.

Standard receiver modules are for 15 or 7.5 kHz audio signals, with others available on special order. Baby boards on the receiver modules contain audio process/companding circuits for the particular system. Deemphasis time is selected with jumpers. Both balanced and unbalanced output connectors are provided on the rear panel.

A 70 MHz output is provided for use with external demodulators. Mode C contacts of a fault-alarm relay are available at the back panel

General Information MA700OVW.sam


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