TPRO-S Timecode Reader/Gen

Timecode Reader/Generator - Model TPRO-S

TPRO-S_timecode_reader_generator

IRIG-A, IRIG-B, NASA36 Timecode Reader
IRIG-B Timecode Generator
Time-Tag Input

Product Overview

The Spectracom Model TPRO-S performs timing and synchronization functions referenced to an input timecode signal. The board synchronizes its on-board clock to the incoming timecode. The on-board clock’s time is also provided as an IRIG-B output. An input is provided to time-tag external events.

The board continues to increment time (“freewheel”) in the absence of an input timecode. Thus, the board can be used as an IRIG-B timecode generator by setting the initial time via the bus.

The input timecode format (IRIG-B, IRIG-A, or NASA36) is automatically detected. Synchronization to the input timecode is also automatic and can be enabled/disabled via software. A propagation delay offset may be specified to compensate for the delays.

The timecode input is an amplitude modulated sine wave. An automatic gain control (AGC) circuit permits a wide range of input amplitudes. The timecode input is differential; the board does not reference this signal to ground. A single-ended input (referenced to ground) is also acceptable.

The board can be ordered with option “-01” to synchronize to a one-pulse-per-second (1 PPS) input instead of an incoming timecode. In this case, the initial time is programmed via the bus, and the board begins counting on the next 1 PPS pulse.

Technical Specifications

Timecode Input	Code Format (Autodetect) IRIG-A (A132), IRIG-B (B122), NASA36 Amplitude 1.2Vp-p min, 8.0Vp-p max Polarity - Detected Automatically Modulation Ratio 2:1 min, 3:1 typ, 4:1 max Input Impedance > 10K ohms Input Time Accuracy Better than 100 ppm (not suitable for tape playback) Common Mode Voltage - Differential input, ± 100V max
IRIG-B Output	Code Format - IRIG-B (B122) Amplitude (Adjustable) 2.6Vp-p typical Modulation Ratio (Adjustable) 3:1 Output Impedance 600 Ohms
Time-Tag Input	Input Voltage -0.5V min, +0.8V max for logic 0 +2.0V min, +5.5V max for logic 1 Tags rising edge Input Current <5 mA for logic 0 and logic 1 Rise/Fall Time 500 nS max Repetition Rate 1000 events per second max Timing Resolution 1 µS
General	Size L 150 mm, W 84 mm, H 21 mm Power (from PCI bus) +5Vdc @ 0.4 Amps max +12Vdc @ 100 mA max -12Vdc @ 20 mA max Operating Temperature -30º to +70º C (-22º to + 156º F) Storage Temperature -40º to +80º C (-40º to +176º F) Connectors BNCs for timecode input and output DB15 (socket) for timecode input, output, heartbeat output, match output, time-tag input, and 1 PPS input.
On-Board Clock	Resolution 1 mS Range 366:23:59:59:999999 Date Format - Integer (001-366) Propagation Delay Correction -1000 mS through +8999 mS Propagation Delay Setting - Programmable Synchronization Time <20 seconds Stability Disciplined to timecode: 1 x 10-6 Undisciplined: 2 x 10-7
S-Bus Interface	Offset 8000 - Time (lower 32 bits) Offset 8004 - Time (upper 32 bits) Offset 8008 - Command Register Offset 8009 - Software Event Trigger Offset 800A - FIFO (read only) Offset 800B - Status Register Offset 800C - (reserved) Offset 800D - Software Reset Offset 800E - (reserved) Time Between Accesses 100 mS min Accesses Needed 2 (read time, 32-bit mode) 14 (read time, 8-bit FIFO mode) 12 (read time, 8-bit FIFO mode) 11 (set time)
Warranty	1-Year Warranty

Ordering Information

1	Specify Spectracom Model TPRO-S (+ option #)
Options (most common)	–01 Sync to external 1 PPS –02 Extended frequency range for heartbeat output Drivers All major operating systems are supported. Contact Spectracom for details.