June 22, 2011

ZTEC Instruments Adds Differential Input Signal Conditioning to Its Popular High-Resolution ZT4400 Series Digitizers and Oscilloscopes

ALBUQUERQUE, NM. – ZTEC Instruments (http://www.ztecinstruments.com) released a new differential (DF) analog front end option for its ZT4400 series of 12-bit, 13-bit and 14-bit digitizers and digital oscilloscopes (specifically including the ZT4421, ZT4422, ZT4431, ZT4432, ZT4441, and the ZT4442).  The DF option offers differential inputs or positive (+) and negative (-) input connectors for each channel (see example line drawings below)­­.

Differential signaling provides a signal conditioning advantage within noisy environments or situations where both the signal and return conductors need to be isolated from ground. Example applications include:
  • When a signal source resides at a different ground potential than the oscilloscope or digitizer needed to make measurements.
  • When an oscilloscope is used to measure signals distributed within a noisy environment where transient noise can be picked up on single-ended coaxial cabling.
  • When ground isolation is required to eliminate ground loops and power line noise.

Key specifications of the ZT4400-DF series include:
  • Two or four differential input channels
  • 12-bit, 13-bit and 14 bit ADCs
  • Up to 1 GS/s sample rate
  • Up to 256 MS deep memory
  • 250 MHz analog bandwidth
  • 0.2 Vpp to 200 Vpp differential input signal ranges
  • 50 Ω (100 Ω differential) and & 1M Ω (2M Ω differential) switchable input impedances
  • Multi-channel alignment and synchronization to less than 50 ps
  • Available in PXI, PCI, VXI and LXI

Three configurations for the ZT4400 series provide alternatives for ADC resolution and maximum sample rate as shown in the following table:

ADC resolution
12 bits
13 bits
14 bits
Maximum sample rate
1 GS/s
500 MS/s
800 MS/s

About ZTEC Instruments
ZTEC Instruments is a leading modular instrument company whose product focus includes oscilloscopes, waveform generators, and RF Test Equipment. ZTEC Instruments’ products are unique in that they provide powerful bench-top instrument capabilities in modular instrument form factors, including PCI, Compact PCI/PXI, VXI, and LXI. For more information about ZTEC Instruments, please visit http://www.ztecinstruments.com.

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