THM500 Series Specifications
Bench Test Instruments and Handheld Oscilloscopes Basic Service
5
Table 2: DMM specifications (cont.)
565560550
Diode test
Range 0 to 2 V. Red input connector is positive.
D D D
Continuity check
Indication Audible tone and graphic of a closed switch displayed when resistance is <50 W
(typical). Indicators optionally disabled.
D D D
Table 3: Scope specifications
550
560 565
Modes
Autorange (Typical) Autorange mode positions and sets the vertical and horizontal scales to between
30% and 60% of full screen. After 500 ms, the process repeats if the signal
amplitude or period changes. The lower limits of Autorange are 50 mV/div and
100 ms/div. Autorange is the default mode.
D D D
Manual The scope switches to manual operation when any control alters the waveform
display.
D D D
Line Test
H Will monitor a 45 to 65 Hz power waveform on CH 1 and check for variations
in amplitude and frequency. Abnormal events, such as spikes, drop-outs, and
substantial frequency variations, will be captured and counted.
D D
H Automatic print of failures
D D
H Automatic screen save on failures
1 8
H Time and date stamp on failure
D
Motor Test Will stabilize (trigger) on pulse-width modulated signals generated by
variable-speed AC motor drives.
D
Vertical
Channels Each channel is identical.
1 2 2
Probe Interface Shrouded banana jack. Accepts 4 mm caged-spring safety style banana plug.
Use probes incorporating 9 leaf-spring contacts only.
D D D
Digitizers 8 bits, 25 Msamples/s
1 2 2
Volts/Division Range 5 mV/div to 500 V/div in a 1-2-5 sequence
D D D
Modes Normal and Invert
D D D
Coupling DC, AC, COM (COM simulated)
D D D
Input Impedance DC Coupled ≤10 pF: ≥975 kW
D D D
Analog Bandwidth 5 mV/div: DC to 1 MHz
10 mV/div to 2 V/div: DC to 5 MHz
5 to 500 V/div: DC to 1 MHz
D D D
Maximum Input Voltage 600 V
RMS
D D D
DC Accuracy (DV) ±(3.5% + 2 pixels) 19_ to 27_ C; derate by 0.25% per _C outside the range.
Derate additional 0.5% at 5 mV/div. Linear range is ±8 divisions from COM
(common).
D D D
Crosstalk Between Channels ≥100:1 at 5 MHz, with other channel connected to COM (common)
D D
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