Meinberg TCR511 - Manual (Page 18)

18
Technical Specifications TCR511
RECEIVER INPUT: AM INPUT ( SMB-Connector ) :
insulated by transformer
impedance :
50
Ω, 600 Ω, 5 kΩ
selectable by jumper
input signal : abt.600mVpp to 8V (Mark)
other ranges on request
DC-Level Shift Input ( VG-Connector )
insulated by opto-coupler device
internal series resistor : 330
Ω
max. input current: 25mA
diode forward voltage : 1.0V...1.3V
DECODING: decoding of the following codes possible :
IRIG-A133/A132/A003/A002
IRIG-B123/B122/B003/B002
AFNOR NFS 87-500
ACCURACY OF TIME BASE : +/- 10us compared to IRIG reference marker
REQUIRED ACCURACY OF
TIME CODE SOURCE :
+/- 100ppm
HOLDOVER MODE: automatic switching to crystal time base,
accuracy : see. accuracy of Oscillator
BACKUP BATTERY : onboard realtime clock keeps time and date
in case of power supply failure. System parameters
are stored in battery buffered ram
lifetime of Lithium battery at least 10 years
RELIABILITY OF
OPERATION:
microprocessor supervisory circuit generates reset
in case of brown-out, software watchdog generates
reset in case of improper program execution
INITIALIZATION: initial time and date can be set by standard
meinberg telegram via serial port COM0
PULSE OUTPUTS: pulse per second PPS,
TTL-Level pulse, active high, 200ms pulse width
pulse per minute PPM,
TTL-Level pulse, active high, 200ms pulse width