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RJM ARTS-201B User Manual

Manual is about: 2 x 1 Analog Protection Switch

Summary of ARTS-201B

  • Page 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.

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    Statement of warranty statement of warranty statement of warranty statement of warranty rjm & associates, llc warrants its products for a period of three (3) years from the date of shipment to be free from defects in materials and workmanship and meets applicable published specifications. Equipment ...

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    Table of contents table of contents table of contents table of contents introduction introduction introduction introduction important safeguards and notices ............................................................................I important warnings and cautions ....................................

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    I important safeguards and notices important safeguards and notices important safeguards and notices important safeguards and notices information on the following pages provides important safety guidelines for both operator and service personnel. Specific warnings and cautions will be found througho...

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    Ii important warnin important warnin important warnin important warnings and cautions gs and cautions gs and cautions gs and cautions warnings warnings warnings warnings • heed all warnings on the unit and in the operating instructions. • do not use this product in or near water. • disconnect ac pow...

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    Iii warnings (continued) warnings (continued) warnings (continued) warnings (continued) • if equipped with redundant power, this unit has two power cords. To reduce the risk of electrical shock, disconnect both power supply cords before servicing. • this equipment may employ laser(s). If it does, th...

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    Iv cautions (continued) cautions (continued) cautions (continued) cautions (continued) • leave the back of the frame clear for air exhaust cooling and to allow room for cabling. Slots and openings in the cabinet are provided for ventilation. Do not block them. • front door is part of fire enclosure ...

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    V note: note: note: note: this equipment has been tested and found to comply with the limits for a class a digital device, pursuant to part 15 of the fcc rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial envi...

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    Section 1 section 1 section 1 section 1 arts arts arts arts----201b 201b 201b 201b general description general description general description general description the rjm arts-201b functions as an analog input transfer unit that can switch between two sets of input signals, a and b, either automatic...

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    2 • a jumper is provided on the main module that defines whether the unit powers up in the automatic or manual mode. Default mode is automatic. The audio connections are made with separate three-pin weco-type connectors for each audio channel. The connectors have a removable mate that is wired to th...

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    3 section ii section ii section ii section ii arts arts arts arts----201b 201b 201b 201b specifications specifications specifications specifications video: video: video: video: inputs: number 2 (input a & input b) input type differential, video instrumentation impedance >100kΩ, bridging to 75Ω commo...

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    4 arts arts arts arts----201b specifications, (cont.) 201b specifications, (cont.) 201b specifications, (cont.) 201b specifications, (cont.) audio: audio: audio: audio: inputs: number 8, (4 channels input a & 4 channels input b) impedance >100kΩ input type balanced, differential common mode rejectio...

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    5 section iii section iii section iii section iii arts arts arts arts----201b 201b 201b 201b installation installation installation installation the rjm arts-201b input transfer unit is designed to be mounted in a standard 19” equipment rack. There are no special cooling requirements though care sho...

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    6 two jumpers are provided on the main module to allow for certain user defined operations: j9 j9 j9 j9 is utilized to determine whether the arts-201b unit is powered up in the automatic or manual mode. After power up, the pushbutton inside the front cover can always be used to override the power up...

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    7 section iv section iv section iv section iv arts arts arts arts----201b 201b 201b 201b circuit description circuit description circuit description circuit description video path video path video path video path: only one signal path, a, will be described since both a and b paths are the same. The ...

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    8 the sync separator u19, which is a vertical sync output, is used to trigger a re- triggerable one shot. The one shot timing is adjusted by the current into c22 from the current source comprised of q1 and u38. The current source is adjustable with r28 over a range such that timing can be varied fro...

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    9 gpi path: gpi path: gpi path: gpi path: the a and b gpi inputs enter on female 9 pin ‘d’ connectors. The output gpi connector is a 9 pin ‘d’ male connector. The a and b gpi’s each go to opposite sides of a form c relay with the common pin of the relay going to the output gpi connector. In the rela...

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    10 conditions, if a video goes away a positive going pulse edge will be created at the input to u27:b clock and the output will toggle to the b inputs. This can only occur if the unit is in auto mode. U32:b locks out edges that could change the selected inputs due to loss of video on the active chan...

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    11 power supply / regulators: power supply / regulators: power supply / regulators: power supply / regulators: the unregulated voltage to the voltage regulators on the main board comes from either of two power supplies that can be removed at the front of the rts frame for service and replacement. Ea...

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    12 secti secti secti section v on v on v on v arts arts arts arts----201b 201b 201b 201b calibration procedure calibration procedure calibration procedure calibration procedure equipment required: dual channel oscilloscope, >50mhz. Video test set. Sweep generator. Vectorscope. Audio generator and an...

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    13 2. Video. 2. Video. 2. Video. 2. Video. Terminate the primary and backup input loops and output #2 with precision 75Ω terminations. 2.1 connect a one volt peak-to-peak staircase signal to the ‘a’ input. Operate the front push-button to ensure that the ‘a’ green status led is illuminated. Connect ...

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    14 2.9 connect a one volt peak-to-peak signal to the ‘a’ input. Connect a different one volt peak-to-peak signal to the ‘b’ input. Operate the front push-button to ensure that the ‘b’ green status led is illuminated. Connect output #1 to the oscilloscope and terminate in 75Ω. Confirm that the ‘b’ si...

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    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..

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    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.

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    17 arts arts arts arts----201b 201b 201b 201b external control connector external control connector external control connector external control connector 9 9 9 9----pin ‘d’ pin ‘d’ pin ‘d’ pin ‘d’ 1 power supply health (low = healthy) 2 input b video present/input health (low = video present and inp...

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    18 arts arts arts arts----201b 201b 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 gnd 6 gnd 7 gpi 1 8 gpi 3 9 gpi 5.