
Page 2-5
2.2.4
2.2.4
2.2.4
2.2.4
2.2.4
Termination
Termination
Termination
Termination
Termination
The ends of an RS-485 transmission line must be termi-
nated to preserve the signal waveform and prevent
reflections. The TimeView 400 termination switch, DIP
switch 10, terminates the RS-485 data bus into 120 ohms.
Place switch 10 in the ON position when the clock is
installed at the end of the RS-485 data bus. Otherwise,
place this switch in the OFF position. Refer to Section 2.4
for additional information on termination.
2.2.5
2.2.5
2.2.5
2.2.5
2.2.5 Power Connection
Power Connection
Power Connection
Power Connection
Power Connection
The standard clock is provided with a 115 VAC 50/60 Hz
wall mount adapter. Units ordered with PS00142, Inter-
national Power Supply, are equipped with a 90 to 240
VAC, 47/63 Hz power adapter mounted to the rear panel.
The international power adapter is shipped with a line
cord compatible with AC receptacles (NEMA 5-15R) com-
monly found in the United States and Canada.
Both adapters are terminated with a barrel type connec-
tor which plugs into the rear panel DC power jack. Secure
the power connector by installing the cable clamp in-
cluded in the ancillary kit as shown in Figure 2-2. Secure
the PS00142 power adapter ground lead to the clock
chassis using the supplied hardware.
NOTE:
NOTE:
NOTE:
NOTE:
NOTE: The PS00142 Power Adapter may
The PS00142 Power Adapter may
The PS00142 Power Adapter may
The PS00142 Power Adapter may
The PS00142 Power Adapter may
be equipped with a safety ground
be equipped with a safety ground
be equipped with a safety ground
be equipped with a safety ground
be equipped with a safety ground
lead on the DC connector end.
lead on the DC connector end.
lead on the DC connector end.
lead on the DC connector end.
lead on the DC connector end.
Secure this lead to the clock
Secure this lead to the clock
Secure this lead to the clock
Secure this lead to the clock
Secure this lead to the clock
chassis using the hardware sup-
chassis using the hardware sup-
chassis using the hardware sup-
chassis using the hardware sup-
chassis using the hardware sup-
plied in the ancillary kit.
plied in the ancillary kit.
plied in the ancillary kit.
plied in the ancillary kit.
plied in the ancillary kit.