Meinberg TCR511PEX User Manual

Page 16

Technical specification TCR511PEX

RECEIVER INPUT:

AM-input (BNC-connector):
insulated by a transformer
impedance settable 50

Ω , 600 Ω, 5 kΩ

input signal:

600 mVpp to 8 Vpp (Mark)
other ranges on request

DC Level Shift input (D-Sub-connector):
insulated by photocoupler
internal series resistance:

220

Ω

maximum forward current: 50 mA
diode vorward voltage:

1.0 V...1.3 V

DECODING:

decoding of the following telegrams possible:
IRIG-A133/A132/A003/A002
IRIG-B123/B122/B003/B002
AFNOR NFS 87-500

ACCURACY OF TIME BASE:

+/-5

µsec compared to IRIG reference marker

REQUIRED ACCURACY OF
TIME CODE SOURCE:

+/- 100ppm

HOLDOVER MODE:

automatic switching to crystal time base
accuracy approximately 1E-6 if decoder has been
synchronous for more than 1h

BACKUP-BATTERY:

if the power supply fails, an onboard realtime
clock keeps time and date information
important system parameters are stored in the
RAM of the system
lifetime of the Lithium battery at least 10 years

RELIABILITY OF
OPERATION:

microprocessor supervisory circuit provides watch
dog timer, power supply monitoring and backup-
battery switchover
software watchdog monitors correct program flow
and generates a reset in case of error detection

INITIALIZATION:

software and realtime clock can be set by a serial
Meinberg Standard Telegram via COM0 or the
PCI-Express bus