Instruction Manual 8144-DD/075020
Page 2-1
INSTALLATION
2.0 INTRODUCTION
This section contains installation instructions for the Model 8144-DD Clock
Selector/Distribution Amplifier. To ensure proper operation, read this chapter
before operating the unit. There are several internal jumpers and switches that
may have to be configured for your specific application.
2.1
PREPARATION FOR USE
This section outlines the set-up procedure for the Model 8144-DD. The switches
described in this section are located inside the unit. Refer to Figure 2-2, Model
8144-DD Component Location.
2.1.1
AC Line Voltage Selection
The Model 8144-DD is factory set for 115 VAC ±10%, 50/60 Hz power line
operation. The instrument may also be operated from a 230 VAC ±10%, 50/60
Hz power line. For 230 VAC operation, change the voltage selection drum and
line fuse as illustrated in Figure 2-1, and as described below:
1.
Remove the line cord (if installed) from the line voltage connector.
2.
Open the fuse and selector drum cover with a small flat-bladed
screwdriver. Insert the screwdriver blade into the cover notch and
pry.
3.
Pull the voltage selection drum from the power connector
assembly. Insert the drum back into the assembly so that the
desired line voltage appears through the cover cut-out.
4.
Pull the fuse block from the power connector assembly. Replace
the fuse with a 1/4 amp, 250V slow-blow fuse for 230 VAC
operation.
5.
Reinstall the fuse block into the lower fuse compartment. Make
certain the arrow on the fuse block is pointing down.
6.
Snap the cover door closed.
