Condition: Used

The Spirent SPT-N4U-220 (Model SPT-N4U) is a 2-slot modular test chassis from Spirent's TestCenter N-Series platform. This unit was tested with MX2 modules and confirmed fully operational. Firmware version 4.71.0296 is installed on Controller Revision E16, with Backplane Version 2. Serial number E17060253. The chassis has been verified with the following licence status: KP4 Licence active, L1 Licence active, TSN Licence active.

Active Licences:
• RFC-2544 with VLAN network device benchmark test pack
• Spirent SW update entitlement
• Packet generator and analyser base package
• KP4 Licence
• L1 Licence
• TSN Licence

Chassis Report Details:
• Chassis Model: SPT-N4U (9U Chassis)
• Firmware Version: 4.71.0296
• Controller Revision: E16 / Controller Version: 3
• Backplane Version: 2
• Serial Number: E17060253
• Slot Count: 2
• Sync Status: Synchronized (Internal)
• Secure Mode: FALSE

The images provided are of the actual item you will receive. Please review them carefully for the cosmetic condition and what is included in the sale.

The Spirent SPT-N4U is a compact modular network test chassis from Spirent Communications, designed to support a range of high-density test modules for Ethernet, IP, and multi-service network validation. As part of Spirent's TestCenter N-Series platform, the SPT-N4U provides a flexible and scalable hardware foundation for performance testing, benchmarking, and protocol conformance testing in both lab and field environments.

The chassis supports a variety of plug-in test modules covering speeds from 1GbE through to high-speed interfaces, enabling engineers to validate network devices, data centre switching, and carrier Ethernet equipment. With support for RFC-2544, Y.1564, and advanced packet generation and analysis, the platform is widely used for network device benchmarking, QoS validation, and service activation testing.

Key Specifications:
Model: SPT-N4U-220
Platform: Spirent TestCenter N-Series
Slot Count: 2
Form Factor: Compact modular chassis
Supported Module Types: MX2 and compatible N-Series test modules
Interface Speeds: 1GbE and above (module dependent)
Test Protocols: RFC-2544, Y.1564, packet generation and analysis
Management: IP-based remote management via TCP
Firmware: Field-upgradeable
Sync: Internal and external synchronisation supported
Licensing: Modular software licence model (KP4, L1, TSN, RFC-2544 and others)

The SPT-N4U-220 is well-suited to laboratory environments requiring a compact yet capable test platform for validating Ethernet performance, benchmarking Layer 2/3 network devices, and supporting advanced protocol testing workflows.

Chassis Report:

 Chassis IP or Hostname

192.168.8.128

Chassis Password

Is Chassis in Secure Mode

FALSE

Does Chassis have the KP4 License

TRUE

Does Chassis have the Tsn License

TRUE

Does Chassis have 5G License for MGIG

FALSE

Does Chassis have 2.5 License for MGIG

FALSE

Does Chassis have the L1 License

TRUE

TCP Port Number

40004

Model

9U Chassis

Model

SPT-N4U

Firmware Version

4.71.0296

Standby Firmware Version

NA

Expected Firmware Version

2.20.0000

Previous Active Version

Is Firmware Version Valid

TRUE

Firmware Version Status

Controller Revision

E16

Controller Version

3

Backplane Version

2

Serial Number

E17060253

Uptime (HH:MM:SS)

Unknown

Sync Status Check

TRUE

Sync Status

Synchronized

Sync Source

Internal

Sync Event

Chain Update

Slot Count

2

Connection Status

TRUE

Status

Up

Status Change

Firmware Install Status

Chassis Firmware Install Progress (% complete)

0

Total Compact Flash Disk Size (in kilobytes)

82438848

Used Compact Flash Disk Space (in kilobytes)

13782336

Free Compact Flash Space (in kilobytes)

68656512

Chassis Event

NTP Peer

NTP Offset (msec)

0

NTP Estimated Error (msec)

0

Chassis IP or Hostname

192.168.8.128

Temperature Sensors

L1-L L1-1 L1-2 L1-3 BP1-L BP1-1 BP1-2 BP1-3 BP2-L BP2-1
BP3-L BP3-3 BP3-4 BP3-5 BP3-6 FNC-L FNC-1 FNC-2 FNC-3 FNC-4

Sensor Description

Local MotherBoard Controller {HDD / SW Card} {BackPlane
Local 1} {Inlet 1} {Inlet 2} {Inlet 3} {Back Plane Local 2} {Inlet 4} {Back
Plane Local 3} {Outlet 3} {Outlet 4} {Outlet 5} {Outlet 6} {PSU Local} {PSU
1} {PSU 2} {PSU 3} {PSU 4}

Sensor Temperature

29 24 25 24 25 25 25 25 25 26 24 22 23 23 23 0 0 0 0 0

Sensor Status

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Sensor Ids

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Temperature Sensor

All

Sensor Temperature

0

Temperature Status

Normal

Fan id

0

Fan name

psu-1

Fan state

On

PartNo

Slot

1

FPGA

CPU

Status

Power Supplies

chs-1 slot-1 slot-2

Power Supply Status

0 0 0

Power Supply Voltage

12.08 12.05 12.07

Power Supply Current

11 0 0

Power Supply

 All (3)

Power Supply Status

0

Power Supply Voltage

12.08

Power Supply Current

11

Shipping & Returns Policy

Shipping Policy

• Processing Time: Orders are typically processed and dispatched within 1 business day.
• Shipping Methods: We offer Expedited Shipping to all destinations using UPS/DHL/Fedex/Royal Mail and other reputable carriers.
• Shipping Times: Mainland UK: 1-2 Business Days / Mainland Europe and USA: 2-3 Business Days / Rest of the World 5-7 Business Days.
• Shipping Costs: These are calculated at checkout based on the shipping method, destination and package dimensions.
• CUSTOMS AND TAXES: It is YOUR responsibility to liaise with customs in your country and ensure your package is cleared and any taxes are paid.
• Shipping Destinations: We ship worldwide.
• Tracking: Once your order is shipped, we will provide you with a tracking number via email.
• Insurance: All shipments are insured. In case of damage, please contact us via email within 48 hours of receiving the product with photographic evidence, please also ensure a report is logged with the delivery driver.

Returns Policy

• Return Period: In the event of an item being received which is 'not as specified', you can return your purchase within 14 days of delivery.
• Condition of Items: Items must be returned unused and in their original packaging.
• Return Method: All returns must be notified in writing to hello@ttinstruments.com, the email should accompany the order number, date and reason for return and must be within 14 days of delivery.
• Restocking Fees: A restocking fee of up-to 20% is applicable for items returned for any reason other than 'not as specified'.
• Refund Method: Refunds are processed to the original method of payment within 5 business days of receiving the return.
• Exchanges: We do not offer exchanges. It will either be a replacement or a refund.
• Return Shipping Costs: Return shipping costs will be borne by the customer unless the item is 'not as specified', in this case we will arrange for the return by way of a prepaid shipping label.