Catalogue → Keysight → Precision LCR meter (E49xx)
E4990A
Keysight · Test equipment · Precision LCR meter (E49xx) unconfirmed
The Keysight E4990A is test equipment in the Precision LCR meter (E49xx) range. Impedance analyzer.
Unconfirmed. This part number matches the published format for Precision LCR meter (E49xx), but we have not checked it against a datasheet. Treat it as a lead, not a fact.
What E4990A sells for
No auction result recorded for this part yet. We publish hammer prices only where we have watched a lot through to close — never an estimate in their place.
See E4990A listed on eBay → Asking prices, not sold prices. We may earn a commission.
| Manufacturer | Keysight (also Agilent, Hewlett-Packard, HP) |
|---|---|
| Family | Precision LCR meter (E49xx) |
| Category | Test equipment |
| Without separators | E4990A |
| Notes | Impedance analyzer; verify |
What changes what E4990A is worth
Same catalogue number, different money. These are the attributes that separate two otherwise identical E4990A units — check each one before you quote or bid.
Option codes
Installed option codes. On configured units these are most of the value.
On the motor or drive nameplate, after the base part number.
Firmware revision
Firmware/FRN revision. Buyers match it to an existing project; a mismatch can make the unit useless to them.
On the label as "FRN" or "FW", and on the module's own display if it powers up.
Tested or untested
Tested / as-is / new-in-box. The single biggest multiplier on used price.
Not on the plate. It comes from whoever pulled the unit, and it moves the price more than anything printed.
Questions
What is an E4990A?
The Keysight E4990A is test equipment in the Precision LCR meter (E49xx) range. Impedance analyzer.
What changes what an E4990A is worth?
Two E4990A units with the same catalogue number can be worth different amounts. What separates them: option codes, firmware revision, tested or untested. Installed option codes. On configured units these are most of the value. Firmware/FRN revision. Buyers match it to an existing project; a mismatch can make the unit useless to them. Tested / as-is / new-in-box. The single biggest multiplier on used price.
Where do you find the series or revision on an E4990A?
Option codes: On the motor or drive nameplate, after the base part number. Firmware revision: On the label as "FRN" or "FW", and on the module's own display if it powers up. Tested or untested: Not on the plate. It comes from whoever pulled the unit, and it moves the price more than anything printed.
Who makes the E4990A?
Keysight makes the E4990A. The same equipment is sold and labelled as Keysight, Agilent, HP, Hewlett-Packard, Hewlett Packard.