Meinberg GPS169PCI User Manual
Page 22
22
ACCURACY OF
FREQUENCY
OPTION OCXO:
after sync. and 20 min of operation
±1
.
10
-9
during first 20 minutes of operation
±2
.
10
-8
Accuracy of quartz
one day, free-running
±2
.
10
-8
one year, free-running
±5
.
10
-7
Short term stability
<= 10 sec, GPS controlled
±1
.
10
-9
<= 10 sec, free running
±3
.
10
-9
Temperature drift
free running
±2
.
10
-7
SSB phase noise
1 Hz besides carrier:
-60 dBc/Hz
10 Hz besides carrier:
-90 dBc/Hz
100 besides carrier:
-120 dBc/Hz
1 kHz besides carrier:
-130 dBc/Hz
SYSTEM BUS
INTERFACE:
universal board for 3.3V and 5V systems
32 bit, 33MHz or 66MHz PCI bus
compatible to PCI and PCI-X specifications
DATA FORMAT: Binary, byte serial
IRIG-OUTPUTS:
Unbalanced AM-sinewave signal:
3V
pp
(MARK), 1V
pp
(SPACE) into 50
Ω
PWM-DC-signal:
TTL into 50
Ω, active-high or -low, selected by jumper
SERIAL PORTS:
2 asynchronous serial ports (RS-232)
Baud Rate:
300 up to 19200
Framing:
7N2, 7E1, 7E2, 8N1, 8N2, 8E1
default setting:
COM0:
19200, 8N1
Meinberg Standard time string, per second
COM1:
9600, 8N1
Capture string, automatically