2635A
Users Manual
2-6
Configuring the Instrument for Operation
To prepare the equipment for front panel operations, perform the two following
procedures:
• Turning the Power On (Figure 2-2)
• Selecting a Channel (Figure 2-3)

Turning the Power on

There are four power-on options. Figure 2-2 describes the control sequences for each
option.
Each power-on sequence includes a four-second selftest routine that lights the front
panel display. If the selftest fails, the instrument will beep and display ERROR plus an
alphanumeric error code character (see Table 2-2). If there is more than one error, each
is displayed in sequence at two-second intervals. Refer to the maintenance information
in Chapter 7 for guidance on what to do when an error is detected.
POWER (Selftest)
Error
POWER
CANCL
+
Simple Power-On. Press the POWER switch.
After selftest, the display clears and the
instrument resumes whatever operation was in
effect when power was last removed.
Configuration-Reset Power-On. Hold down the
CANCL key and press the POWER switch. Hold
the CANCL key until the instrument completes
selftest and "beeps" in acknowledgement. All
channel configuration data is erased and the
operating parameters are set to default settings
(see Table 2-1). The temperature scale and
communication settings are not affected.
Display-Hold Power-On. Hold down the SHIFT
key and press the POWER switch. Hold the
SHIFT key until the instrument completes the
selftest routine and "beeps" in acknowledgement.
The front panel display will remain lit until any key
is pressed.
Temperature-Toggle Power-On. Hold down the
Mx+B key and press the POWER switch. Hold
the Mx+B key until the instrument completes
selftest, "beeps" in acknowledgement, displaying
either °F or °C. To select the other temperature
scale, remove power and repeat the procedure.
(Selftest)
Error
POWER
SHIFT
+
(Selftest)
Error
POWER
Mx+B
+
(Selftest)
Error
op14f.eps
Figure 2-2. Turning the Power On