ProDAQ 6118 Isolated Precision Frequency Meter LXI Instrument

  • Inputs: Each input is 5V TTL compatible and operates in the range from 3Hz up to 3000Hz. Each channel is isolated from any other and also from the chassis. This eliminates the possibility of ground loop errors.
  • Simultaneous Sampling: The scan rate of ProDAQ 6118 has a maximum of 2000 S/s.
  • Various Mounting Options: The ProDAQ 6118 comes in a 1U high unit suitable for rack mount in a standard 19” rack if used with the ProDAQ 5725 Rack-Mount kit. The ProDAQ 6118 can also be desktop mounted using the ProDAQ 5726 Stackable Tabletop Feet Set.
  • 19”, 1U Solution for 16 Counter/Timer Channels
  • Channel Isolation up to 300 VDC (channel to channel and channel to ground)
  • Two analog and one TTL outputs Per channel
  • Simultaneous Sampling of all channels
Size Guides


SKU: ProDAQ 6118 Category:
Delivery and return
Delivery and return
Shipping Information
Shipping Information
Composition and care
Composition and care



The ProDAQ 6118 is an LXI instrument designed for 16-channel isolated precision frequency measurements. It is designed to operate as a frequency meter.
The ProDAQ 6118 provides an easy to use, cost effective and scalable solution for the most demanding flow- and counter measurement applications. As a standalone LXI instrument it can be directly connected to your network and operated either through the integrated web pages or integrated to your data acquisition application using the VISA-based industry standard plug & play drivers provided. Multiple devices can be synchronized via the IEEE1588 precision time protocol or optional via the LXI trigger bus. The unit is equipped with a redundant power supply and two Ethernet ports.



  • General
    • Number of signal channels: 16
    • Isolation: 300 VDC (Channel to channel, channel to chassis and channel to output)
    • Input type: 5V TTL
    • Input Protection: ±30V, max. continuous input current 10 mA, max. 3A for up to 10msec
    • Sampling: Up to 2000 Samples per second
    • Type of input: 4-wire (Excitation 2; Signal 2)
    • Input range: From 3Hz to 3000Hz
    • Outputs: Two analog 0-10V, one 5V TTL (frequency)
    • Calibration: By external precision calibration source and Software
    • Isolation: Between Input, Outputs, Power supply and channels
    • K-Factor: K-Factor provided through Software
    • Programming: K Factor Range Counter/Frequency
    • Input Impedance: ≥ 40kΩ
    • Accuracy: ≤ ±0.05% FSO
    • Response Time (Input to Output): One period plus 20msec or 120msec, whichever is lower
    • Frequency/Flow: Period/Frequency mode
    • Output Resistance: ≤ 1Ω, continuous short circuit protected
    • Sensor excitation: 24V, 50mA
  • Control Interface
    • Physical Interface: Two redundant network ports, 10/100/1000 Base-TX
    • Software Interface: SCPI over VXI-11 protocol (VISA), TCP/IP, Web Interface
    • Operating System Support: Windows 10
  • Environmental
    • Temperature: 5 °C to +50 °C (operational), -40 °C to +70 °C (storage only)
    • Humidity: 5% – 95% (non-condensing)
  • Power Supply
    • Input: 85 – 264V AC, 47 – 63 Hz
    • Power: 150W max.
    • Size: 1U, 19”



  • 5725 Rack-Mount Kit
  • 5726 Stackable Tabletop Feet Set



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