Pulse measurement specifications

Terminals are individually configurable for switch closure, high-frequency pulse, or low-level AC measurements.

Switch-closure input

Terminals:

• P_SW
• C1-C2 (Requires an external 100 kΩ resistor connected from the terminal to VX1 or VX2.)

Maximum Input Frequency: 150 Hz

Minimum Switch Closed Time: 3 ms

Minimum Switch Open Time: 3 ms

Maximum Bounce Time: 1 ms open without being counted

High-frequency input

Terminals:

• SE1-SE4
• P_LL
• P_SW
• C1-C2

Maximum Input Frequency:

• SE1-SE4: 35 kHz
• P_LL: 20 kHz
• P_SW: 35 kHz
• C1-C2: 3 kHz

Low-level AC input

Terminals: P_LL

Maximum Input Voltage: ±20 VDC

DC-offset Rejection: Internal AC coupling eliminates DC-offset voltages up to ±0.05 VDC

Input Hysteresis: 12 mV at 1 Hz

Low-Level AC Pulse Input Ranges:

Sine wave (mV RMS)	Range (Hz)
20	1.0 to 20
200	0.5 to 200
2000	0.3 to 10,000
5000	0.3 to 20,000

Quadrature input

Terminals: SE1 and SE2 or C1 and C2 can be configured as digital terminal pairs to monitor the two sensing channels of an encoder.

Maximum Frequency: 2.5 kHz

See Pulse measurements for additional information.