Spectracom 9289, Инструкция по эксплуатации

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Model 9289 Spectracom Corporation
NetClock/NTP Network Time Provider Instruction Manual 2-16
Figure 2-12: Model 8179T TimeTap RS-485 Interface
Spectracom Model 9288 is an Ethernet Time Server that supports NTP and SNTP time
protocols. The Model 9288 accepts Format 0, Format 2, Format 7, or Format 8 (Formats 7 and
8 are not available on all time sources – Contact Tech Support for additional information) and
connects to the RS-485 data bus through a three-position terminal block. Connect the Model
9288 to the NetClock as shown in Figure 2-13.
.
Figure 2-13: Model 9288 RS-485 Interface
The Model 8185, TimeBurst
™
, provides a digital time-of-day data burst to a radio transmitter.
The TimeBurst accepts Data Format 0 or 1. Connect the TimeBurst to the RS-485 data bus
using a 3-position terminal block as shown in Figure 2-14.
NETCLOCK
REMOTE OUTPUT
1
2
3
3-POSITION
TERMINAL BLOCK
+DATA
-DATA
GROUND
Twisted Pair
TO MODEL 8179T
TIMETAP
+DATA
-DATA
GROUND
TO OTHER
RS-485
DEVICES
1
2
3
4
5
5-POSITION
TERMINAL BLOCK
NETCLOCK
REMOTE OUTPUT
1
2
3
3-POSITION
TERMINAL BLOCK
+DATA
-DATA
GROUND
Twisted Pair TO ETHERNET TIME
SERVER
+DATA
-DATA
GROUND
TO OTHER
RS-485
DEVICES
1
2
3