Sigma BSG26N Operator's Manual
Contents
1. Inc warrants that it s products are free from defective material and workmanship at the time of shipment from Sigma Electronics The products will possess the electrical characteristics as set forth in the specifications for a warranty period of five years This warranty does not include any Sigma Electronics product or part thereof which have been subjected to misuse neglect improper installation use in violation of instructions furnished or accident It does not extend to products that have been modified from original design outside the factory Nor does it extend to units from which the serial number has been removed defaced or changed Nor does it extend to accessories not of Sigma Electronics Inc manufacture 3 of 4 All specifications drawings dimensions weights and other details are subject to change without notification Information is intended to give a general performance and operation guideline of the product Sigma Electronics Inc 448 1027 Commercial Avenue East Petersburg PA 17520 0448 Main Office Tel 717 569 2681 Fax 717 569 4056 REV6 DEC98 SIGMA ELECTRONICS INC BSG 26 SERIES SERVICE MANUAL CAUTION These servicing instructions are for use by qualified personnel only To reduce the risk of electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so Refer all servicing to qualified service personnel Explanation2. of symbols used The following symbols appear on the product 4 ODAL DANGER ATTENTION Protective Ground Fuse Replacement High Voltage Refer to Manual earth Terminal RISK OF FIRE REPLACE FUSE AS MARKED Read the IMPORTANT SAFETY INSTRUCTIONS before installing or operating this equipment Keep this information in an accessible location for reference by all users Follow all instructions in this manual for safe operation JUMPERS The following jumpers are located on the PCB inside the enclosure They are provided for custom configuration of the BSG 26N and BSG 26P The modules should not require any adjustments for normal Black Signal operation J1 Superblack Black Select Default position Pins 2 3 Black Optional position Pins 1 2 Superblack J2 Setup On Off Default position 1 2 Setup On NTSC BSG 26N Position 2 3 Setup Off PAL BSG 26P J3 Subcarrier Phase Select 0 or 180 Default position is 0 Opposite position is 180 ADJUSTMENTS The following adjustments are located on the PCB inside the enclosure They are provided for custom configuration of the BSG 26N and BSG 26P The modules should not require any adjustments for normal Black Signal operation C31 Subcarrier center frequency R7 Sync Setup Gain Set per standards specified R14 Subcarrier Null Minimizes residual subcarrier on output signal R20 Burst Gain Set per standards specified R22 Variable Subcarrier Phase Adjust 180 SCH Phase ad
3. where they exist from the apparatus Only use attachments accessories specified by the manufacture Unplug this apparatus during lightning storms or when unused for long periods of time Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped Interference Information 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 environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense This Class A digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations 1 OF 4 SIGMA ELECTRONICS INC BSG 26 SERIES INSTRUCTION MANUAL WARNING To reduce the risk of fire or electric shock do not expos
4. SIGMA STAND ALONE NTSC BLACK SIGNAL GENERATOR BSG26N OPERATOR S MANUAL ELECTRONICS INC Bore 86 448 1027 COMMERCIAL AVENUE EAST PETERSBURG PA 17520 0448 717 569 2681 www sigmaelectronics com SIGMA ELECTRONICS INC BSG 26 SERIES IMPORTANT SAFETY INSTRUCTIONS Explanation of symbols used The following symbols appear on the product A WV DANGER ATTENTION Protective Ground Fuse Replacement High Voltage Refer to Manual earth Terminal RISK OF FIRE Beak REPLACE FUSE AS MARKED Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with a damp cloth Do not block any of the ventilation openings Install in accordance with the manufactures instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety When the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet Protect the power cord form being walked on or pinched particularly at plugs convenience receptacles and the point
5. e this apparatus to rain or moisture GENERAL The BSG 26N and BSG 26P are Black Signal Generators which provide six 6 blackburst signal outputs The outputs are driven from the same internal source to ensure system synchronization The design of the units provides suitable operation for applications from complex total system timing to laying black on tape The blackburst signal is digitally derived from a temperature compensated oscillator These units provide a stable output and do not require any adjustments during operation The outputs are present when power is applied Superblack operation is selective via J1 With J1 jumper shorted across pins 1 and 2 the module will produce superblack on all outputs Superblack can be used when building a Multi Pass special effect The superblack signal approximately 7 5 IRE provides a noiseless background that can be laid down on the tape for this application The BSG 26N NTSC ersion provides outputs per RS 170A SMPTE 170M standards The BSG 26P PAL version provides outputs per CCIR 624 4 standards Specifications are provided in the SPECIFICATIONS section POWER The BSG 26 Series accommodates a wide range of line voltage from 90 VAC minimum to 255 VAC maximum The line frequency range is 50 to 60 Hz The units utilize an IEC 320 inlet to accommodate the proper power cord set for the line voltage connectors used in any geographical area The combination of the wide voltage range and universal inle
6. just See JUMPER section jumper options R25 Subcarrier Symmetry Provides minimum difference in duty cycle between 0 and 180 setting of J3 DISASSEMBLY NOTE REMOVE THE POWER BEFORE DISASSEMBLY OF THE UNIT Disassembly is not necessary for normal Black Signal operation Tools needed 1 Phillips head screw driver Procedure 1st remove the four rear panel Phillips head machine screws one per corner 2nd remove the electrical assembly by pulling the rear panel from the enclosure the PCB is attached to the rear panel TECHNICAL MANUAL A manual including schematics circuit description parts list and setup guide is available upon request This information is intended for the service of the unit The units should be serviced by qualified personnel only Sigma Electronics Inc recommends service to be performed by the Factory Service Center 4 4
7. quired for normal Black Signal operation Note Adjustments to be performed by qualified personnel only SPECIFICATIONS OUTPUTS 9 26 6 Blackburst RS 170A NTSC SMPTE 170M BSG 26P 2 aerat erang 6 Blackburst per CCIR 624 4 PAL gt In accordance with standards specified 0 5 SCH JITTER lt 2 SETUP amp SUPERBLACK Jumper Selection 7 5 0 7 5 IRE MASTER CRYSTAL STABILITY 14 318180 MHz TCXO NTSC 17 734475 MHz TCXO PAL Initial 1 PPM VS 1 PPM Year vs Temperature 1 PPM 0 C to 50 C CONNECTORS BNC POWER VOLTAGE RANGE 100 to 240 VAC 10 6 90 to 255 VAC LINE FREQUENCY 50 to 60 45 47 to 63 Hz POWER CONSUMPTION 6 Watts nominal 9 Watts max CONNECTOR Power IEC 320 ENVIRONMENTAL OPERATIONAL TEMPERATURE 32 to 131 F 0 to 50 C MECHANICAL DIMENSIONS 1 75 H x 5 5 W x 8 5 D 44 5 x 140 x 216 mm SHIPPING WEIGHT 4 Ib 1 8 kg TECHNICAL MANUAL Technical Manual is available upon request See the Service Manual WARRANTY Sigma Electronics
8. t contributes to the diversity of applications where the BSG 26 will supply a dependable source of black signal The module internally regulates the bus voltage to 5 VDC U8 and 5 VDC U9 Circuit protection is provided by an externally accessible fuse Figure 1 FRAMES The BSG 26 units are assembled in a stand alone box The metal enclosure provides desirable shielding from external EMI RFI noise sources See the section on SPECIFICATIONS for recommended operational conditions The units are capable of rack mounting with the optional RMK 26 Rack Mount Kit This 1RU rack mount does not require blank panels for unused portions A total of three 3 Series 26 units may be mounted with a single RMK 26 CONNECTIONS The connectors are located on the rear panel BNC connectors are used for the six outputs Each of the outputs are designed to drive a 75 Ohm load The outputs must be terminated by a single end of line 75 Ohm termination to ensure proper signal level Unused outputs do not require a 75 Ohm terminating resistor FUSE 100 240V OUTPUTS 50 60Hz 6w SIGMA ELECTRONICS INC REAR PANEL Figure 1 2of4 JUMPERS Jumpers are provided for custom configuration No jumper changes for normal Black Signal operation See the Service Manual for jumper details Note Jumpers selection to be performed by qualified personnel only ADJUSTMENTS Adjustments are provided for custom configuration No adjustments are re
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