T
ECHNICAL
D
ATA
8029HEPTA-V2/GPS GPS - NTP Time Server with LAN Interface - V08.00
116 / 130
hopf
Elektronik GmbH
Nottebohmstr. 41
• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
12.3 Module 8024GPS
Accuracy
Internal PPS pulse on GPS reception
(after 5min. continuous GPS reception):
Standard Quartz:
< ± 30ns
VCTCXO:
< ± 15ns
VCO control
of the internal quartz base
(after 5 min continuous GPS reception):
Standard Quartz:
< ± 0.030ppm
VCTCXO:
< ± 0.015ppm
Freewheel accuracy:
Standard Quartz:
< ± 0.1ppm
after at least 5min. GPS reception/ T = +20° C
Drift for T = +20° C (constant):
- after 1h: 0.36msec.
- after 24h: 8.64msec.
VCTCXO:
< ±0.02ppm
after at least 5min. GPS reception/ T = +20° C
Drift for T = +20° C (constant):
- after 1h: 0.72msec.
- after 24h: 1.73msec.
Internal back-up clock (RTC):
± 25ppm /
for T = +10° C to +50° C
GPS Data
Receiver type:
22 channel phase tracking receiver, C/A code
Evaluation:
L1 frequency (1575.42MHz)
Sensitivity:
Tracking:
-161dB
Cold Start:
-148dBm
Synchronization time
TTF (Time to First Fix):
•
Warm start:
< 1min.
•
Cold start:
< 5min
•
first installation
< 12.5 min
(without valid leap second information)
Antenna connection:
•
Via BNC connector, female
•
For active antennas,
U
b
= 5V DC
•
Antenna power feed via BNC connector,
female of Module 8024GPS
Signal Outputs
Status optical coupler:
Via 3-pole pluggable screw terminal
Resistive circuit-breaking capacity:
max. 50mA / 80V DC
Special production:
Modifications can be made to hardware and software in accordance with customer
specifications.
The
hopf
Company reserves the right to modify hardware and software at any
time.
