Meinberg TCR510PCI, Руководство по эксплуатации

Страница: 16 / 20

16
Technical specification TCR510PCI
RECEIVER INPUT:AM-input (BNC-connector):
insulated by a transformer
impedance settable 50
Ω,
600
Ω
, 5 k
Ω
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
μ
sec 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 bus