Meinberg GPS167LCD-MP Manual de usuario descargar pdf (Pagina 32)

32

ACCURACY OF

FREQUENCY: after sync. and 20 min of operation ±1

.

10

-9

during first 20 minutes of operation ±2

.

10

-8

GPS synchronous, 24h averaged ±1

.

10

-11

ACCURACY OF

FREQUENCY

(QUARTZ): one day, free-running ±2

.

10

-8

one year, free-running ±5

.

10

-7

TIME

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: 10 kHz beside carrier -101 dB/Hz

1 kHz beside carrier -76 dB/Hz

100 Hz beside carrier -60 dB/Hz

TIME_SYN

OUTPUT: TTL HIGH level if synchronized

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

COM1: 9600, 8N1

TIME CAPTURE

INPUTS: triggered on falling TTL slope

Interval of events: 1.5msec min.

Resolution: 100ns

POWER

REQUIREMENTS: 5V ± 5%, @900mA

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