• Dual-input digital oscilloscope and multimeter in a ScopeMeter® test tool
  • Available with a 40 MHz or 20 MHz oscilloscope bandwidth
  • Features Connect-and-View™ trigger simplicity for hands-off operation
  • Includes IntellaSet™ technology to automatically and intelligently adjust numerical readout based on measured signal
  • Provides a dual-input waveform and meter reading recorder for trending data over extended periods


  • High temperature infrared thermometer that measures from -30°C to 900°C (-22°F to 1652°F)
  • Offers an ultra-high 60:1 distance-to-spot ratio with dual laser sighting for fast, accurate targeting
  • Features a user-selectable multi-language interface
  • Displays the temperature plus MAX, MIN, DIF, AVG temperature
  • Provides adjustable emissivity and a predefined emissivity table


  • A completely sealed, IP67 rated case
  • Withstands drops up to 10 ft or 3 m (with holster)
  • Dustproof per IEC 60529 IP6x
  • Waterproof per IEC 60529 IPx7
  • CAT III 1000 V, CAT IV 600 V
  • Reversible holster for added protection of the display when not in use


  • Large display
  • Backlight for work in dim areas
  • Min / Max to record signal fluctuations
  • Ergonomic overmolded housing with integrated probe holders
  • Free your hands with the optional TPAK magnetic hanger
  • Auto and Manual ranging
  • Meets Measurement Category 1000 V CAT III and Category IV 600 V safety standards
The 77 IV replaces the 77. Move up to superior utility and safety today.


  • Two electrically isolated inputs
  • CAT III 1000 V / CAT IV 600 V safety rated
  • 500 MHz bandwidth model
  • 5 GS/s
  • Deep memory: 10,000 samples per channel waveform capture so you can zoom in on the details
  • Dedicated 5000 Count digital multimeter
  • Connect-and-View continuous auto-trigger, single shot, pulse width, and video triggering
  • ScopeRecord roll mode, capture waveform sample data for up to 48 hours
  • TrendPlot, trend measurement readings for up to 22 days
  • Advanced automatic measurements, power (Vpwm, VA, W, PF) and time (mAs, V/s, w/s)
  • IP-51 rated for dust and drip proof to withstand harsh environments
  • Isolated USB ports for memory devices and PC connectivity
  • Li-Ion battery for extended operating timespan: up to 4 hours (BP290 included standard) or up to 8 hour with optional BP291
  • Charge spare battery using optional external battery charger (EBC290)
  • Easy-access battery door to make it easy to swap batteries
  • A handy slot to tether and lock down the oscilloscope while unattended using a standard Kensington® lock