Model 2650P PCI 32Mbit Multi-Channel Bit Synchronizer

Model 2950P PCI 40 MHz Multi-Stream Bit Synchronizer

Product Support

Accepts all codes at rates up to 40 Mbps
Up to 16* independent Synchronizers per chassis
Tunable data rates of 8 Hz to 40 MHz for all codes
User selectable inputs and outputs
Processes all IRIG standard and randomized codes
Programmable loop bandwidth control
Bit error performance below 1dB of theoretical - typically 0.5 to 0.75 db
Independent PCM encoders
Automatic sensing of all bit syncs in chassis
Configured via GUI, Network, RS232
Dual Hot-swappable Redundant Power Supplies

Overview

The Model 2950P Multi-Channel Bit Synchronizer consists of up to sixteen* 32 or 40 MHz PCM Bit Synchronizers in a single PCI based chassis. The compact 4 u (7" tall) chassis featrues a 7” LCD touch-screen control panel, with independent LED Bit Sync status display identical to those found previously only high performance single and dual channel units. Touchscreen display and keyboard allows fast and easy viewing of all setup parameters and status, while the LED status indicators support confident operator decision making in the most demanding and complex operational environments. The system includes dual hot-swappable redundant power supplies to minimize the loss of mission critical data, removable system hard drive, and an amazing 88 bulkhead rear panel BNC connections which are configurable to match the most complex signal I/O demands.

At the heart of the Multi-channel system are the Acroamatics new Model 1611P and new Model 474DM Advanced Digital Bit Synchronizer cards. Each 1611P and 474DM can be enhanced with a programmable logic module to provide an optional format synchronizer (frame verify), a built-in bit error rate test (BERT) generator or support for unique decoding applications requiring non-standard codes or data formats (Viterbi). The logic module is reprogrammable and can be replaced in the field without any special tools, thus minimizing down time when a new application comes along. This upgradeability will allow you to respond quickly to evolving requirements such as:

• Recovering data from newly defined or application specific coding schemes

• Creating canned formats for recovering data from concatenated or layered codes

• Monitoring data streams for frame synchronization to resolve ambiguities or polarity inversions typical with many modulation schemes

System Software

GUI Setup and Operation Status displays are accessed through a built-in color LCD display and keyboard. Each of the Model 1611Ps are controlled via a single interface with drop down menus for individual cards. The unit automatically recognizes all of the bit synchronizers as well as their features. Setup configurations can be stored and retrieved for all previous missions as a group or individually. A page lock command accessible via the GUI reminds users before executing new instructions in order to avoid mistakes during a live mission. Remote users can control the unit via the included Ethernet or RS-232 port. If two users are viewing the system simultaneously, both see the changes made in real time by either user.

User Manual

Technical Specs

SYSTEM FUNCTIONS
Acroamatics Software Suite	Included
GUI Interface	Standard
Operating System	Windows 7 / XP Pro
Configuration Storage	Limited only by disk space
Special Features	Lock out per bit synch, Auto-sensing configuration, Setups stored per system or mission. Remote GUI Display via Ethernet or RS-232
CHASSIS
Form Factor	Standard PCI
Available Slots	12
Processor	Intel High Performance Processor
DRAM	2GB
Storage	500G HDD, DVD/CD-RW, FDD
Display	7” LCD Touch screen set-up and monitor
Keyboard	Optional 1u drawer keyboard/17" LCD Monitor - Dual Slide (independent display deployment)
I/O Ports	4 USB Ports, 1 RS-232
Network	100/1000 Ethernet
Power	Dual Hot-swappable Redundant 110/220v 500W
Rear Panel I/O	Pre-configured 88 BNC’s

SIGNAL INPUTS
Source	Program selectable: one of five inputs
Isolation	Greater than 60dB at 40MHz
Impedance	Program selectable: Hi-Z/Lo-Z. Single Ended: 4kΩ/75Ω, Differential: 10kΩ/150Ω
Signal Level	Single Ended: 0.2 to 20V p-p, Differential: 0.2 to 25V p-p
DC Offset	20V max Single-Ended, Hi-Z
Baseline Variation	Tracks sinusoidal offsets to 100% p-p signal amplitude at 0.1% bit rate
PCM Codes	Program selectable: NRZ-L/M/S, Biø-L/M/S, DBiø-M/S, DM-M/S, MDM-M/S, RZ
Derandomizer	Program selectable: RNRZ 9/11/15/17/23, forward/reverse
SYNCHRONIZATION
Bit Rate Range	8bps-40Mbps channel one thru eight, 8 Hz to 32MHz channels 9 thru 16 ... all codes
Tuning Resolution	0.1% of bit rate
Capture Range	3 times the programmed loopwidth, typical
Tracking Range	±12% typical, with programmable limiter
Loop Bandwidth	0.1% to 3.2%, program selectable in 0.1% increments
Sync Threshold	0dB for NRZ-L and Biø-L codes
Sync Maintenance	(LW=0.1%) –2dB NRZ-L and Biø-L codes
Sync Acquisition	(LW=1.6%, SNR > 12dB) Typically less than 32 bit periods
Sync Retention	(LW=0.1%, SNR > 3dB) Retains sync through > 128 consecutive dropouts
Bit Error Rate	(LW=0.1%) to within 1dB of ideal bit error rate performance curves
DATA/CLOCK OUTPUTS (TAPE & CODE OUTPUTS)
NRZ-L Data	One TTL (Optional RS422)
Data Clock	One TTL (Optional RS422), program selectable: 0º, 90º, 180º, 270º
2x Clock	One TTL, program selectable: 1X/2X, normal/invert
Data Polarity	Program selectable: normal/inverted
SOFT BIT DECISION OUTPUT
Data/clock	Four bits Offset Binary plus 0º clock; TTL (open collector)
Sample Rate	Programmable to 20 megasamples per second
PCM ENCODER
Data Source	Program selectable: Recovered Data or External data, or Test generator
Outputs	One bipolar, 4V p-p; Two TTL
Randomizer	Program selectable: RNRZ 9/11/15/17/23
PCM Codes	Program selectable: NRZ-L/M/S, Biø-L/M/S, DBiø-M/S, DM-M/S, MDM-M/S, RZ
EXTERNAL DATA/CLOCK INPUT
Signal Type	Jumper Selectable: RS422 or TTL
Impedance	120Ω RS422, 75Ω TTL
Data Code	Program selectable: NRZ-L/M/S, Biø-L/M/S, DBiø-M/S, DM-M/S, MDM-M/S, RZ : up to 40Mhz all codes
Data Clock	Program selectable: Normal/Inverted, 1x or 2x
CONVOLUTIONAL ENCODER/DECODER (OPTIONAL PER CARD)
Viterbi Decoder	Rate 1/2, k=7: includes differential decoding, V.35 descrambling, and G2 invert
Symbol Formats	serial, parallel, and staggered parallel
Convolutional Encoder	Rate 1/2, k=7: includes differential encoder, V.35 scrambler, and G2 inverter
Symbol Formats	serial, parallel, and staggered parallel
FORMAT GENERATOR/SYNCHRONIZER (OPTIONAL PER CARD)
Format Generator	Programmable frame length, sync pattern and mask
Synchronizer Source	Program selectable: Recovered data, external data, or Test generator
Synchronizer Strategy	Pattern match in "search", programmable error limits for "check" and "lock" states
Other Features	Bit slip enable, auto polarity enable, data source/ambiguity resolution
BIT ERROR RATE TESTER (OPTIONAL PER CARD)
Transmitter Pattern	PRN sequence: 2⁷-1, 2⁹-1, 2¹¹-1, 2¹⁵-1 (forward/reverse)
Pattern Generator Clock	Program selectable: Bit Rate Clock or External Clock
Blanking	Program selectable: 32, 64, 128 bits -synchronized to BER counter
BER Sample Period	Program selectable: 10³ to 10⁹ bit periods, or continuous accumulate
Other Features	Automatic pattern synchronization, forced error ON/OFF
PHYSICAL
Power	90-132V or 180-264V auto select, 50-60Hz, 4A max
Dimensions	7" (17.8 cm) H x 19.0" (48.3 cm) W x 20.19" (51.3 cm) D
Temperature	Operating 0 to +40° C, Non-Operating -40 to +86° C
Relative Humidity	Up to 90% non-condensing
Shock	6G, Non-operating 50G
Vibration	Operating 0.5G, 5 to 2000 Hz, Non-operating 1.2G, 5 to 500 Hz
specifications subject to change without notice