Quick verdict
Choosing a data acquisition recorder usually starts with the list of inputs, but the harder question is how much certainty you need in the unit itself. One side is a KEYSIGHT mainframe with a clear model name and an open-box condition; the other is a DATAQ INSTRUMENTS system with a used condition. The choice is between spending at the top of this bracket or at the bottom, and the comparison table makes that visible.
If you want a defined model identity and would rather buy open-box than used, the KEYSIGHT #DAQ970A is the stronger match. If you want to keep the spend at the lower end of the bracket and can work with a used unit, the DATAQ DI-500-16 is the practical route.
Comparison table
| Comparison point | KEYSIGHT #DAQ970A Data Acquisition System Mainframe | DATAQ INSTRUMENTS DATA ACQUISITION SYSTEM DI-500-16 |
|---|---|---|
| Listed price | USD 2,600.00 | USD 635.00 |
| Price position | ||
| Condition | New - Open box | Used |
| Model | DAQ970A | DI-500-16 |
| Brand | KEYSIGHT | DATAQ INSTRUMENTS |
| Price gap | $1,965 higher | $1,965 lower |
Where each product wins
- KEYSIGHT #DAQ970A wins if the open-box condition and a confirmed DAQ970A model identity matter more than the extra spend.
- DATAQ INSTRUMENTS DI-500-16 wins if a used system at the lower end of the price bracket is an acceptable trade.
The table captures the core difference: both are labeled as data acquisition systems, but the DAQ970A is an open-box mainframe with a named model, while the DI-500-16 is a used system. The price gap is not about a long list of extra features; it is about the status of the unit and how much certainty you want.
Product notes
KEYSIGHT #DAQ970A Data Acquisition System Mainframe
Start with the KEYSIGHT #DAQ970A if you want a mainframe that is easy to talk about in concrete terms. The product title calls it a Data Acquisition System Mainframe, identifies the model as DAQ970A, and states the condition as New - Open box. That means you are looking at a unit that has been opened but is not described as used. The concrete reason to choose it is the open-box condition: it is closer to a fresh unit than a used one. The limitation is the $2,600 listed price. You are paying for that condition and for a named mainframe.
DATAQ INSTRUMENTS DATA ACQUISITION SYSTEM DI-500-16
On the DATAQ side, the DATAQ INSTRUMENTS DATA ACQUISITION SYSTEM DI-500-16 takes the opposite position. It is described as Used and carries a United States country of origin. The concrete reason to choose it is the $635 listed price, which puts it at the lower end of this pair. If the goal is to spend less on data acquisition hardware and you can accept a used unit, this system gives you a clear path. The limitation is exactly that used condition. A used system can carry unknowns about handling and prior use, and the trade is straightforward: lower price, more uncertainty.
Final choice by use case
- If you are building a dedicated measurement setup and want a named KEYSIGHT mainframe with open-box status, choose the KEYSIGHT #DAQ970A.
- If you are outfitting a secondary test area, have a tighter spend, and are comfortable with a used DATAQ INSTRUMENTS system, choose the DI-500-16.
