Meinberg TCR180, Manual

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3 TCR180 Features
3 TCR180 Features
The TCR180 card decodes and generates modulated (AM) and unmodulated (DC Level Shift, DCLS) IRIG-A/B/G,
AFNOR NF S87-500, IEEE C37.118, or IEEE 1344 time codes. AM codes are transmitted by modulating the
amplitude of a sine wave carrier, unmodulated codes by variation of the width of pulses.
The TCR180 is equipped with a high quality oscillator which is disciplined as log as an input signal is available,
and provides accurate time in holdover mode if the input signal is disconnected.
Receiver:
Automatic gain control within the receive circuit for unmodulated codes allows decoding of IRIG-A/B/G, AFNOR
NF S87-500, IEEE C37.118 or IEEE 1344 signals with a carrier amplitude of 600 mVpp to 8 Vpp. The input
stage is electrically insulated and has an impedance of either 50
Ω , 600 Ω or 5 k Ω , selectable by a jumper.
Generator:
The time code output of the TCR180 can generate time codes in IRIG-A/B/G, AFNOR NF S87-500, IEEE
C37.118, or IEEE 1344 format. The output signal is available as modulated (3 Vpp / 1 Vpp into 50
Ω ) and
unmodulated (DC Level Shift, DCLS) signal (TTL into 50 Ω and RS-422). A jumper on the board allows selection
of active-high or active-low DCLS output.
Format and UTC offset of the incoming and outgoing time codes can be configured independently, so the
TCR180 is well-suited for time code conversion.
The card provides four configurable serial interfaces (RS-232) COM. COM0 is available via the Sub-D connec-
tor, COM1 is accessible via an VG connector on the board.
TCR180 provides a synthesizer which can generate output frequencies from 1/8 Hz up to 10 MHz with TTL level
into 50
Ω as a sine wave signal.
TCR180 Date: 4th June 2021 7