Chapter 5
Setting Internal Jumpers
Jumpers in the clock are shipped in the factory default position
, or according to the purchase order
notes. Should it be necessary to change any jumpers or to enable an alternate function, follow the
instructions in this chapter.
5.1
Cover Removal
The instrument cover must be removed to change jumper configuration.
1. Disconnect the power cord.
2. Using a Torx T25 driver, remove the eight screws securing the cover and rack mount ears.
3. Lift the cover off.
5.2
Setting Mainboard Jumpers
Figure 5.1 indicates important jumper and test point locations on the mainboard.
Use this
illustration to assist you with locating the jumpers you may want to configure.
Jumpers are
noted on the mainboard with a “JMP” prefix before the numbered location. For example, jumper
3 would have a label of JMP3 on the mainboard. Table 5.1 lists all of the current jumpers, their
specific functions and default settings.
1
Factory default jumper settings are marked with an asterisk and located in Table 5.1.