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Remote Operation via RS-232 Interface
Setting The Switches
Seven switches on the RS-232C rear panel determine the interface's baud rate, active
handshake,^ and parity. All switches are set to the up position at the factory. New settings are
recognized immediately displayed on the front panel when a switch setting is changed. The
switch settings are defined in the following pages.
Figure 2-3. Rear-panel RS-232 switches
Mode Settings
^ select the enhancements/compatibility setting and the power-on state of the
^ dd25B. These two switches are not directly tied to remote operation of the HP 3325B.
They are explained here, in the remote control chapter, for the sake of completeness They
are explained again in Chapter 3, General Information.
— Switch 1 determines the enhancement setting. Enhancements refers to
capabihti^ that ^e improved on or added to those of the HP 3325A. When the enhancement
mode is oft, the Ip* 3325B is in the compatible mode. The enhancements mode may also be
controlled with the ENH command as described later in this chapter.
Tum-On Preset — Switch 2 determines the tum-on settings. The choice is between the
instrument preset state or the state of the instrument when it was last turned off.
Table 2-5. Mode Settings: switches 1 and 2
*
Requires that enhancements be on
2-13
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