Anonymous Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
E7574A
Keysight/Agilent E7574A, Non-Invasive, High-Impedance, Datacom Line Interface Module
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
✔ Free Domestic Ground Shipping
✔ NIST Calibration Available
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Keysight/Agilent E7574A Datacom Line Interface Module
Engineers of industrial automation and communications technicians use the Keysight E7574A data com line interface module as a method of implementing active noninvasive observation of legacy serial communication interfaces for proactive network maintenance. The Keysight E7574A uses a non-intrusive high-impedance monitor of legacy serial communication linkages, which allows an engineer to examine the V.35, RS-449 (V.11), and RS-232 (V.28) circuits without interruption to live traffic. Each unit can be used to monitor four bidirectional channels simultaneously using eight individual receivers. Therefore, it provides the ability to determine all faults within a network that involves both manufacturing data and telecommunications transmission.
The Keysight E7574A line interface module has two 50-pin CHAMP connectors for observing the signals on the circuitry for easy incorporation into current testing methods. The maximum data rate supported by the Keysight E7574A is 64 Kb/sec for V.35 and RS-449 and 64 Kb/sec for RS-232. In addition, there are no framing requirements associated with the operation of the module; therefore, it captures the raw bitstream with ± 350 ms time stamp accuracy when operating at full data rate. Additionally, the module contains built-in level one alarm functionality; specifically, alarms are generated if either a received clock or a received signal is lost. Thresholds for terminated receivers for each standard have been established as follows: V.35 mark = −0.2 V to −1.0 V, space = 0.2 V to 1.0 V, common mode = ±2 V; RS-449 mark = −0.2 V to −6.0 V, space = 0.2 V to 6.0 V, common mode = ±7 V; RS-232 mark = −3 V to −15 V, space = 3 V to 15 V.
Impedances presented to bridged receivers on the Keysight E7574A will always be greater than 20 Kohms for V.35 and RS-449 standards. Impedances presented to RS-232 receivers will vary from 3 Kohms to 7 Kohms depending upon the number of drivers attached to the transmitter. These high impedances provide excellent preservation of signal quality.
The tolerance of the received clock frequency is ± 4 percent up to 56 Kb/sec and ± 1 percent at 64 Kb/sec, providing good synchronization over a wide variety of clocks. Therefore, these factors combined make the Keysight E7574A line interface module an essential device for the continued maintenance of older industrial data com networks and the performance of detailed serial protocol analysis and debugging.
| Model | E7574A |
|---|---|
| Part Type | Datacom Line Interface Module |
| Monitored Links | 4 bidirectional (8 receivers) |
| Interface Standards | V.35, RS-449, RS-232 |
| Data Rate | Up to 64 kb/s |
| Connectors | 2 × CHAMP 50-pin |
| Bridged Impedance | V.35/RS-449: >20 kΩ; RS-232: 3–7 kΩ |
| Clock Tolerance | ±4% ≤ 56 kb/s, ±1% at 64 kb/s |
| Timestamp Precision | ±350 ms at 64 kb/s |
| Receive Alarms | Loss of Signal, Loss of Clock |
Associated part numbers for E7574A:
Delivery:
Eligible returns may be accepted within 30 days at Apex Waves’ discretion. A 25% restocking fee applies; non-refundable and built-to-order products are excluded.
Payment:
Receive Price & Availability Today!
Ask About Our Tiered Calibration Levels
Option & Modules:
Confirm Your Requirements or Versions
Cost & Lead Time Available Upon Request for Service
Repair Evaluation: $150
Common Typos:
Why Buy From Apex Waves:
