Model 450R, 450TDual FM Subcarrier Receiver and TransmitterOperators ManualFIRST 8/10/98 REV A 8/26/99Data, drawings, and other material contained he

1-4.GENERAL DESCRIPTION.The Model 450 Dual FM Subcarrier System consists of two complete frequency agile FMtransmitters or receivers in a single enclo

Section 2 INSTALLATION2-1. INTRODUCTION. - This section contains instructions for installing and interfacing the Model 450 Dual FM Subcarrier. Inclu

2-4. POWER REQUIREMENTS. - The Model 450 requires a power source of 105V-130V 50-60Hz or 210V-250V 50-60Hz. Power consumption is:Transmitter...

Figure 2.1 AC Connector2-6. POWER CABLE. - In accordance with safety standards, this equipment is supplied with a three conductor cable. When connec

2-10. VIDEO/BASEBAND CONNECTIONS. - Baseband connections are BNC connectors on the rear of the shelf. A detailed description of the connections are:

2-12. REPACKAGING. - If the equipment is to be returned to Cross Technologies, Inc. for any reason, care should be taken in packaging. Call Cross Te

Section 3 OPERATION3-1. INTRODUCTION. - This section describes operation of the front panel controls. There are three operator switches, the LCD di

3-3. CONTROL SWITCHES.1. Program/Execute. Any change to the programming of the unit must be initiated by pressing the Program/Execute switch and com

NOTE: The modified frequency and ON/OFF condition will not become effective until the final operation of the Program/Execute switch described in the n

3-6. TROUBLESHOOTING.In the event of difficulty with the 450 Subcarrier System, the following list of possible causesshould be reviewed prior to cont

Model 450R, 450T Dual FM Subcarrier Receiver and TransmitterOperators Manual TABLE of CONTENTSSECTION TITLE

450 Operation Manual Rev A Page 20 8/26/99 PROBLEM/SYMPTOM POSSIBLE CAUSE Audio sounds noisy. Channel spacing may be too To

450 Operation Manual Rev A Page 21 8/26/99PROBLEM/SYMPTOM POSSIBLE CAUSE LCD display shows: A checksum error was found after reading the non-

Section 4 - ADJUSTMENTS and OPTIONS4-1. INTRODUCTION. - This section describes operator adjustments and the selection of the internal options. For a

4-3. TRANSMITTER FRONT PANEL ADJUSTMENTS.NOTE:Prior to setting levels be sure transmitter is ON and set to proper frequency. See Section 3.4-4. Level

2. With the measuring instrument properly tuned to the frequency of the channel tobe adjusted, set the IF (subcarrier level) screwdriver adjustment on

B. Deviation Adjustment Using a Spectrum Analyzer.1. If the spectrum analyzer has a high impedance input, connect it to the baseband signal atany conv

4-6. RECEIVER FRONT PANEL ADJUSTMENTS.NOTE: Prior to setting levels be sure receiver is ON and set to proper frequency. See Section 3.4-7. Squelch

4-8. Audio Adjustment.A. Connect a high impedance AC Voltmeter across the T and R terminals for the appropriatechannel at the rear of the unit under

Figure 4-1Transmitter Jumper Block Locations.450 Operation Manual Rev A Page 28 8/26/99P3PPL P2IMPEDS3 P8EMPHP5PPL P4IMPED P9EMPHS2DS1T1T2J1

4-10. Transmitter Audio Input Level. - The audio input level selection is made on jumper block P3 for the "A" channel, and on P5 for the &q

TABLE of CONTENTSSECTION TITLE PAGE4 ADJUSTMENTS and OPTIONS ...

4-13. RECEIVER INTERNAL OPTIONS. - The internal options are selected with jumper plugs on the internal printed circuit board, and require removal of

Figure 4-1Receiver Jumper Block Locations.450 Operation Manual Rev A Page 31 8/26/99P2PPL P8VID HPFS3 P4EMPHP3PPL P5EMPHS2DS1T1T2J1J2TB1P8P5P4P

4-15. Receiver Emphasis Type. - The emphasis type selection controls the de-emphasis used only when the expander is switched out. The expander inclu

WARRANTYThis Cross Technologies product is warranted against defects in material and workmanship for one year from the date of shipment. During this

OPERATORS SAFETY CONSIDERATIONSGeneralThe general safety information in this documentation is for operating and servicing personnel. Specific warning

OPERATORS SAFETY CONSIDERATIONS(Cont'd.)____________ WARNING ____________Danger From Loss of Protective GroundUpon loss of the protective ground

Section 1 - GENERAL INFORMATION1-1. INTRODUCTION.This manual contains information necessary for the installation, operation, testing and alignment of

TABLE 1-1 SPECIFICATIONSAudio Interface:Input/Output Frequency range ... 40 Hz to

TABLE 1-1 SPECIFICATIONS(Cont'd.)Power Requirements:Standard.........115/230 VAC (47-63 Hz) Environmental Requirement