Amprobe 5XP-A 15XP-A 35XP-A - Manual (Page 16)

9 10
3. Press the NCV button. The display goes blank, a tone
sounds and the red LED next to the NCV button on the
front panel lights up to verify that the instrument is
operational. While pressing the button, hold the top-
center of the meter
(sensor location) close to the
conductor/circuit in question.
4. If a voltage in the range of 70 to 600 V ac is present, a
tone sounds and the red LED next to the NCV button
on the front panel lights up.
Testing Battery Voltage
(5XP-A only) (See Figure 12)
1. Set the Function Switch to the appropriate BATT
setting, 1.5 V or 9 V.
2. Connect the test leads: Red to BATT 1.5 V or BATT 9 V,
Black to COM.
3. Connect the test probes across the battery. The meter
applies an appropriate load to the battery.
4. Read the display. A good 1.5 volt battery should
measure >1.2 V, and a good 9 volt battery should
measure > 7.2 V.
Testing Logic Levels
(15XP-B only) (See Figure 13)
The 15XP-B tests logic levels for TTL logic. The meter displays
0o plus a ∧ for a high-level (true) condition. The meter beeps
and displays an 0o and a ∨ for a low-level (false) condition.
See Specifications for the logic 1 and logic 0 voltage limits.
Out-of-limits indications are displayed as
0o only, no ∧, ∨ or
beep occur.
1. Set the Function Switch to LOGIC.
2. Connect the test leads: Red to V , Black to COM.
3. Connect the black lead to logic common.
4. Connect the red lead to the logic test point.
5. Read the display.