9 Technical Appendix
9.1 Technical Specifications GPS Receiver
Receiver:
12 - channel C/A code receiver with external antenna/converter unit
Antenna:
antenna/converter unit with remote power supply
refer to chapter "Technical specifications of antenna"
Power Supply
15 V DC, continuous short circuit protection, automatic recovery
for Antenna:
isolation voltage 1000 VDC, provided via antenna cable
Antenna Input:
antenna circuit dc-insulated; dielectric strength: 1000V
length of cable: refer to chapter "Mounting the Antenna
Time to
one minute with known receiver position and valid almanac
Sychronization:
12 minutes if invalid battery buffered memory
Pulse Outputs:
eight programmable outputs (PP 1 - PP 8)
DC-insulated by optocouplers
U
CEmax
= 55 V, I
Cmax
= 50 mA, P
tot
= 150 mW, V
iso
= 5000 V
pulse delay:
t
on
e.g. 20
µ
sec (I
C
= 10mA)
t
off
e.g. 3
µ
sec (I
C
= 10mA)
change of second (P_SEC, TTL level)
change of minute (P_MIN, TTL level)
Accuracy
after synchronization and 20 minutes of operation
of Pulses:
OCXO SQ/MQ/HQ/DHQ: better than
±
50 nsec
better than
±
2
µ
sec during the first 20 minutes of operation
Frequency
Outputs:
10 MHz, TTL level into 50 Ohm
1 MHz, TTL level
100 kHz, TTL level
Frequency
Synthesizer:
1/8 Hz up to 10 MHz
Accuracy of
Synthesizer:
base accuracy depends on system accuracy
1/8 Hz to 10 kHz
Phase syncron with pulse output P_SEC
10 kHz to 10 MHz
frequency deviation < 0.0047 Hz
Synthesizer
Outputs:
F_SYNTH:
TTL level
F_SYNTH_OD:
open drain
drain voltage:
< 100 V
sink current to GND:
< 100 mA
dissipation power at 25
◦
C:< 360 mW
F_SYNTH_SIN:
sine-wave
34
Date: 17th June 2020
microSync
