US Army Materiel Command Acquisition Center, White Sands Contracting Division, AMSSB-ACW (Bldg 126W), White Sands Missile Range, New Mexico 88002-5201

66 -- GPS TIMING EQUIPMENT SOL DAAD07-00-R-(TBD) POC Michael D. Derr @ (505) 678-2827 E-MAIL: Click here to contact the contracting Officer via, derrmd@wsmr.army.mil. In the spirit of the Competition in Contracting Act, U.S. Army Materiel Command Acquisition Center, White Sands Division, is seeking alternate sources for commercially available GPS timing equipment. The equipment to be provided must be functionally equivalent to, or compatible, with other equipment currently fielded at White Sands. The four (4) items, with their salient characteristics are as follows: (1) The Camera Timing Amplifier provides two time code outputs (IRIG A or B time code formats) suitable for recording serial time on film. The primary source of time code input is range time. When equipped with its GPS option, unit will utilize an IRIG A or IRIG B time code derived from GPS if range time code input disappears. Unit operates from 110 VAC, 15 volts, 50 70 Hz. Unit includes internal battery power with capacity in excess of five (5) hours, Unit packaged small, rugged case (during transport, unit withstands 1G acceleration on all axis from from 0 300Hz, and 4G transit pulse less than 10 milliseconds). Front panel controls shall include power on/off, switches to select the input configuration, range time code input, time code format of output from GPS option (if equipped), and phase of the LED driver outputs. Output pulse width and current capacity is adjustable via front panel screwdriver controls. Front panel LED's indicate power on, battery low and battery under charge. When the GPS option installed, LED's indicate GPS receiver lock, unit operating from the range time code input/GPS derived time code. Test points permit monitoring of input time code (from range or GPS) and LED driver output. UNIT MUST BE PHYSICALLY AND ELECTRICALLY COMPATABLE WITH DATACHRON MODEL 3750-200 SO AS TO FACILITATE CHASSIS, CIRCUIT BOARD, FIRMWARE, INTERFACE AND POWER SUPPLY INTERCHANGE ! (2) The Timing Distribution Amplifier, shall include five input channels (BNC connectors, rear panel) bussed to each of twelve card slots. Unit shall include dual AC Amplifier or Dual Time Code Demodulator card which can be inserted in any slot, unit to provide 24 buffered outputs (BNC connectors, rear panel) from the five frequency or time code inputs. All cards and power supply shall be front loading. Dual AC Amplifiers can be connected to any one of the five input signals. Each amplifier is adjustable for amplitude and plug programmable for output configuration (single ended or balanced). Dual Demodulator Amplifiers can be connected to one of the five inputs using jumpers on the card. Each channel is adjustable for output amplitude. Plug-in power supply provides regulated power buses each connected to all card slots (current capacity of each power bus exceeds 2 amps). Unit fits into a standard 19-inch rack with slide mount capability. Cards and power supply plug in from the front of the unit and are accessible behind a hinged front panel door. UNIT MUST BE PHYSICALLY AND ELECTRICALLY COMPATABLE WITH DATACHRON MODEL 3750-185 SO AS TO FACILITATE CHASSIS, CARD AND POWER SUPPLY INTERCHANGE! (3) The IRIG VME Timing Card is a synchronizedprecision time source which provides time to other modules in a VME chassis. Unit requires one 6U-card slot, and works with VME configurations of A16: D08, D16. Configurations are selectable with plug jumpers on the card, permiting the accommodation of different VME bus configurations. Unit automatically synchronizes to the time contents of either an IRIG A or IRIG B time code input. Input code is selectable by a plug jumper on the card. With the IRIG A input present, synchronization is automatic to within 0.5 microseconds; with IRIG B, synchronization is achieved to better than 5 microseconds. If for some reason the synchronizing source is removed, the card continues to accurately accumulate time from the last point at which it was synchronized. Time is derived from an on-board temperature compensated crystal oscillator (TCXO, stability better than +,- 1 X 10-7 from 0 to +50o C, drift 3 X 10-9 per day). Unit time accumulators are synchronized to the contents of the input (either IRIG A or B). If dropout of the input code is detected, synchronization of the time accumulators is stopped and the card continues operation as a clock from the last point at which it was synchronized. Unit outputs time upon receipt of a request over the VME bus or from one or more of seven external time requests. Upon receipt of an external time request, the card interrupts the host via one of seven interrupt lines (IRQ1-IRQ7) and then places time information on the VME data bus upon receipt of an interrupt acknowledgement. Time output consists of BCD data, indicating microseconds through hundreds of days. Format of the time output varies depending on the data bus configuration selected (D08 or D16). External time requests are serviced in order of receipt. The VME request has priority, then external time requests. If time requests are received simultaneously, they are serviced in the order of the number of the interrupt (IRQ1-IRQ7). The card services two of seven interrupts (IRQ1-IRQ7) as selected by plug jumpers on the card. One interrupt is generated by the external time requests (see above). The second interrupt is a heartbeat pulse rate programmable over the VME bus to any rate, from 1PPS to 100KPPS with 1PPS resolution. Both the external time request and heartbeat interrupts can be programmed to be output over one of the seven interrupt lines. Another parameter programmable via the VME bus is the propagation delay between the synchronizing source and the card. Programming resolution of this time offset is 100 nanoseconds to a maximum count of 0.9999 milliseconds. CARD MUST BE ELECTRICALLY PIN-FOR-PIN AND FIRMWARE COMPATABLE WITH THE DATACHRON 32704045 TO ALLOW FOR DIRECT FIELD INTERCHANGE WITHOUT MODIFICATION AND/OR REPROGRAMMING ! (4) The Modular Time Code Processor is a single unit that can be customized to fit a multitude of different timing applications using available rear-panel plug-in modules that can be configured as a stand-alone time code generator or can be synchronized to an external source. Modules are available for synchronizing to GPS (Global Positioning System), precise serial time codes (landline or VHF receiver module), tape reproducer time code outputs, and computer outputs. Available output modules include time code generators; TTL and sinewave rate generators; telecommunications signal generators; computer interfaces; multiple-output line drivers; and a tape search controller. Outputs are customizable to meet specialized applications using plug-in modules. Unit shall be a 19-inch rack-mount chassis with 12 module locations in a 3-1/2-inch high chassis. Input and output modules can be inserted in any module location. Unit senses module types and locations and reports this information to the front panel display. This report, along with fault reports, additional status data, and unit serial number is also available to remote computers via rear panel ports. Advanced features include front panel adjustment of output levels and a fault sensing system encompassing the main unit and all installed modules. Any reported fault is isolated to module level. Unit has a disciplined crystal oscillator with nonvolatile digital storage of center frequency. When used as stand-alone generator, oscillator may be calibrated in the field using a precise external 1 PPS input. Accuracy when disciplined is 10 to the 12 power for a 24-hour period average. Unit shall have rubidium oscillator option. In stand-alone generate mode, an external 1, 5, or 10 MHz input may be used in place of the internal oscillator. This input may also be used in conjunction with an external time code sync input if the two sig-nals are derived from the same source; i.e., the time code and external standard must be phase locked to each other. Time being processed is shown on a nine-digit LED display. Vital status data are indicated on indi-vidual small LED's at the bottom of this display. Menu system directs the operator to all available system setup and status-request modes, eliminating need for constant reference to the instruction manual. Nonvolatile memory stores all operating mode parameters when power is off. The keypad, with the aid of the display, is used for operational control (Preset, Slew, etc.). Unit incorporates two RS-232 I/O ports to allow for duplication of front-panel setup commands, duplication of front-panel status and fault reports, time output and list of installed modules & housekeeping data. seventeen different off-the-shelf plug-in modules available. All modules are hot-swappable. UNIT MUST BE PHYSICALLY AND ELECTRICALLY COMPATABLE WITH TRAK MODEL 9000B SO AS TO FACILITATE CHASSIS, FIRMWARE, INTERFACE AND MODULE INTERCHANGE ! Posted 04/17/00 (W-SN445689). (0108)

Loren Data Corp. http://www.ld.com (SYN# 0239 20000419\66-0008.SOL)