Microsemi SyncServer S350i, Руководство пользователя

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Specifications
n
Rubidium 1E-9 (1 ppb)
Note: If the 1PPS In signal is too noisy, the Hardware Clock may not be able to lock to it.
1PPSOut
Description: 1PPS Out , a female BNC connector mounted on the rear chassis, provides a once
per second pulse that is synchronous with the SyncServer's Hardware Clock.
Connector:BNC female (1PPS Out)
Amplitude:TTL Levels into 50 Ohms
Duty Cycle:50% nominal
On Time Edge:Rising
IRIGIn(Timecode In)
Description:
IRIG In
accepts a time code for input from an external timing reference into the Syn-
cServer's Hardware Clock. The time code format is selected via the Web interface. Supports
both amplitude modulated (AM) and DC level shifted (DCLS) inputs. For the SyncServer to
maintain lock to this signal, the stability of the time code input must be better than the pull-range
of the system oscillator. Also see
REFERENCES - Timecode
(on page 71 ) and
IRIG Control
Function Bits (on page
120
).
Connector:
IRIG In
, BNC female
DCLS Amplitude:<1.5 V for logic 0, >2.0 V for logic 1
AM Amplitude:1 to 8 Vpp
AM Ratio:2:1 to 4:1
Impedance:>5k Ohms
Typical system oscillator pull-ranges:
n
TCXO 1E-6 (1 ppm)
n
OCXO 5E-7 (0.5 ppm)
n
Rubidium 1E-9 (1 ppb)
Note: If the inbound signal is too noisy, the Hardware Clock may not lock to it.
Selectable Time Code Input Formats:
n
IRIG A
n
IRIG A AM (with year)
n
IRIG A DCLS (with year)
n
IRIG A AM (no year)
n
IRIG A DCLS (no year)
n
IRIG B
n
IRIG B AM (with year)
n
IRIG B DCLS (with year)
n
IRIG B AM (no year)
n
IRIG B DCLS (no year)
n
IRIG B 1344 AM
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