RJM ARTS-201B Скачать руководство пользователя

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RJM & Associates, LLC

175 Joerschke Drive, Suite A

Grass Valley, CA 95945

Phone: 530-205-3437 Fax: 530-273-8482

info@rjmandassociates

www.rjmandassociates.com

ARTS-201B

2 x 1 Analog Protection Switch

Содержание ARTS-201B

Страница 1: ...RJM Associates LLC 175 Joerschke Drive Suite A Grass Valley CA 95945 Phone 530 205 3437 Fax 530 273 8482 info rjmandassociates www rjmandassociates com ARTS 201B 2 x 1 Analog Protection Switch...

Страница 2: ...r a particular purpose RJM is not liable for any consequential damages FCC Compliance FCC Compliance FCC Compliance FCC Compliance This equipment has been tested and found to comply with the limits fo...

Страница 3: ...Section II Section II Section II Specifications 4 Section III Section III Section III Section III Installation 6 Section IV Section IV Section IV Section IV Circuit Description 8 Video Path 8 Audio P...

Страница 4: ...o not personnel only To reduce the risk of electric shock do not perform any servicing other than that contained in the operating perform any servicing other than that contained in the operating perfo...

Страница 5: ...liquid or aerosol cleaners use only a damp cloth Dangerous voltages exist at several points in this product To avoid personal injury do not touch exposed connections and components while power is on D...

Страница 6: ...event injury Never install telephone wiring during a lightning storm Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations Never touch uninsulated t...

Страница 7: ...pulated with surface mount and ASIC components Special tools and techniques are required to safely and effectively troubleshoot and repair modules that use SMT or ASIC components For this reason servi...

Страница 8: ...to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if no...

Страница 9: ...ms There is a single connector for each audio channel output There are five GPI lines plus a dedicated line that indicates the A and B receiver s health This line is sensed by the ARTS 201B and indica...

Страница 10: ...ale D connector The switch between GPIs is made with relays so that the logic level passes through the switch unaltered Default mode is the A signal passing to the output See the table on page 19 for...

Страница 11: ...differential 2v Outputs Number 2 Return loss 35dB 5MHz Impedance 75 0 1 Level 1 volt peak to peak nominal 2v max Horizontal Tilt 0 DC coupled Vertical Tilt 0 DC coupled Differential gain 0 2 10 to 90...

Страница 12: ...Maximum level 22dBu Gain Unity 6dB by internal adjustment Total Harmonic Distortion THD 0 02 20Hz to 20KHz 24dBu Intermodulation Distortion IMD 0 02 4 1 SMPTE Response 0 1dB 20Hz to 20KHz 0 0 3dB 100K...

Страница 13: ...or to confirm and make gain adjustments to the signal that is being fed to the A B video switch If these connectors are not used they should be terminated Audio input and output cables must be wired t...

Страница 14: ...module to allow the user to define whether the unit automatically returns to the A input upon return of A signal or whether it remains on the B input until it is manually returned to the A input The r...

Страница 15: ...gain of the amplifier which compensates for the cable loss at DC from the cable resistance There are three different destinations for the video signal after the gain stage One is to the sync separator...

Страница 16: ...tage has a gain of 6 dB which is made up in the balanced output stage The output of U1 feeds the switch of U9 which selects either A inputs or B inputs The output of the switch feeds an adjustable gai...

Страница 17: ...a high state but at power up a low logic level at the input to U32 D is inverted to a high state which causes XOR gate U31 D to invert the normally high level from U29 C to a low logic level This clea...

Страница 18: ...h is fed to one of the inputs of NAND gate U50 D which will allow a Force A signal to pass through to the output of U51 D Once a Force A signal has forced the system back to the A input U51 D will cle...

Страница 19: ...itors the positive and negative outputs and reports the power supply condition on one pin to the main board A dual color LED on the front of the power supply displays its health Green indicates normal...

Страница 20: ...c and tally functions are correct Check that all LEDs on the front panel illuminate correctly and that the GPI connector functions are present and correct 1 Power supplies 1 Power supplies 1 Power sup...

Страница 21: ...MHz bandwidth and 100mV level Set R137 R137 R137 R137 to the mechanical center of its range 2 4 Adjust C70 C70 C70 C70 for the best response out to 30 MHz It may be necessary to adjust R137 R137 R137...

Страница 22: ...ensure that the A green status LED is illuminated 3 2 Connect a 1KHz 22dBu balanced audio signal to the A primary input 1 3 3 Monitor the 1 output and adjust GAIN 1 R77 R77 R77 R77 for 22dBu 3 4 Move...

Страница 23: ...15 3 11 Disconnect all power to the unit and confirm that the A audio input signal is routed to the A channel output 3 12 Repeat steps 3 10 and 3 11 for all four channels...

Страница 24: ...16 SECTION VI SECTION VI SECTION VI SECTION VI ARTS ARTS ARTS ARTS 201B 201B 201B 201B Diagrams Diagrams Diagrams Diagrams External Control Connector Pin Assignments GPI A B Connector Pin Assignments...

Страница 25: ...Present and Input Healthy 3 Number of Inputs Low 1 Input 4 Select Input A Active Low Momentary Pulse 5 GND 6 Input A Video Present Input Health Low Video Present and Input Healthy 7 Input Selection S...

Страница 26: ...201B 201B GPI A GPI A GPI A GPI A B B B B and Output and Output and Output and Output CONNECTOR CONNECTOR CONNECTOR CONNECTOR 9 9 9 9 PIN D PIN D PIN D PIN D 1 GND 2 Receiver Health 3 GPI 2 4 GPI 4 5...

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