Meinberg TCR170PEX User Manual

TCR170PEXTechnical InformationOperating Instructions

10Features TCR170PEXThe board TCR170PEX is designed as a standard height board for computers withPCI Express interface. The data transfer to the compu

11TCR170PEX provides a synthesizer which can generate output frequencies from 1/8 Hz up to 10 MHz with TTL level into 50 Ω and as a sine signal.

12Block diagram TCR170PEX

13Functional description of receiverAfter the received IRIG code has passed a consistency check, the software clockand the battery backed realtime clo

14The board TCR170PEX decodes the following formats:A133: 1000pps, amplitude modulated sine wave signal, 10 kHz carrier frequencyBCD time of year, SBS

15Input impedanceThe IRIG-specification doesn’t define values for the output impedance of generatorsor the input impedance of receivers. This fact led

16Master oscillatorAs standard, TCR170PEX is equipped with a TCXO (Temperature CompensatedXtal Oscillator) optionally an OCXO LQ/MQ/HQ (Oven Controll

17Unmodulated outputsThe pulse width modulated DC-signals are coexistent to the modulated output andare available with TTL level into 50 Ω and as RS-4

18The default configuration for the pulse outputs is:PPO0: Pulse each second (PPS), active HIGH, pulse duration 200 msecPPO1: Pulse each minute (PPM),

19Time capture inputsTwo time capture inputs (CAP0 and CAP1) are provided at a contact strip ofTCR170PEX to measure asynchronous time events. A fallin

ImpressumMeinberg Funkuhren GmbH & Co. KGLange Wand 9D-31812 Bad PyrmontTelefon: ++49 (0) 52 81 / 9309-0Telefax: ++49 (0) 52 81 / 9309-30Internet:

20Connectors and LEDs in the bracketThe bracket of the board includes theBNC-connectors for the amplitudemodulated time codes (input/output),two LEDs,

21Pin assignments of the D-Sub connectorOnly the signals of the serial interface are connected to the D-Sub-plug directly. Ifanother signal shall be c

22Jumper and contact stripsThe following diagram shows the possible jumper settings and the assignment of thecontact strips of the board TCR170PEX:

23Frequency synthesizerThe frequency synthesizer is capable to generate output frequencies of 1/8 Hz up to10 MHz as sine wave signal and with TTL leve

24Configuration of TCR170PEXThe selection of the IRIG code, configuration of the serial interface and a possibleoffset of the received IRIG time to UT

25Replacing the Lithium BatteryThe life time of the lithium battery on the board is at least 10 years. If the need arisesto replace the battery, the f

26Technical specification TCR170PEXRECEIVER INPUT: AM-input (BNC-connector):insulated by a transformerimpedance settable 50 Ω, 600 Ω, 5 kΩinput signal

27GENERATOR OUTPUTS: modulated output:unbalanced sine carrier, 1 kHz3Vpp (MARK), 1Vpp (SPACE) into 50 Ωunmodulated outputs (DCLS):TTL into 50 ΩRS-422a

MASTER OSCILLATOR: TCXO(Temperature Compensated Xtal Oscillator)accuracy compared to IRIG-reference:sync. and 20 min. of operation: ±5.10-9first 20 mi

RELIABILITY OFOPERATION: microprocessor supervisory circuit provideswatch dog timer, power supply monitoring andbackup battery switchoversoftware watc

Table of ContentsImpressum... 2Content of the USB stick ...

30Format of the Meinberg Standard Time StringThe Meinberg Standard Time String is a sequence of 32 ASCII characters startingwith the STX (start-of-tex

31Format of the Capture StringThe Meinberg GPS167 Capture String is a sequence of 31 ASCII characters termina-ted by a CR/LF (Carriage Return/Line Fee

32Format of the time string Uni Erlangen (NTP)The time string Uni Erlangen (NTP) of a GPS-clock is a sequence of 66 ASCIIcharacters starting with the

33‘L’ leap second is actually inserted(active only in 60th sec.)‘ ‘ (space, 20h) no leap second is insertedbbb.bbbb latitude of receiver position in d

34Format of the SAT-Time StringThe SAT-Time String is a sequence of 29 ASCII characters starting with the STX(start-of-text) character and ending with

35KonformitätserklärungDeclaration of ConformityHersteller Meinberg Funkuhren GmbH & Co. KGManufacturer Auf der Landwehr 22D-31812 Bad Pyrmonterkl

TCR170PEX- E- 15. 10. 09

4Putting into operation ... 23Installing the TCR170PEX in your Computer ...

5Content of the USB stickThe included USB stick contains a driver program that keeps the computer´s systemtime synchronous to the received IRIG-time.

6Description of IRIG-CodesThe specification of individual IRIG time code formats is defined in IRIG Standard200-98. They are described by an alphabeti

7IRIG-Standard format

8AFNOR-Standard format

9PCI Express (PCIe)The main technical inovation of PCI Express is a serial data transmission comparedto the parallel interfaces of other computer bus