Hewlett Packard 4943A & 4944A
Transmission Impairment Measurement Set, Refurbished

• Portable for field service tests
• Analog testing of voice/data channels
• Master/Slave for remote end-to-end testing
• Automatic self check

4943A TIMS
Gives you a Permanent Record of Your Measurements

The analog output circuit allows you to display the measured signal on a CRT display or record it on a X-Y recorder or strip chart recorder. Built-in storage and internally generated graticule lines allow you to use non-storage oscilloscopes or uncalibrated CRT display.
MASTER-SLAVE operation allows remote end-to-end testing without adding an external controller. The Slave unit operates unattended, with measurements in both directions controlled and displayed by the Master unit. Adding the HP-IB option provides automatic testing.

4944A TIMS
Measures All Parameters for C & D Conditioned Channels

The 4944A TIMS measures all parameters including nonlinear distortion, tariffed for C- and D-conditioned leased data lines. Non-linear distortion is measured using the four tone intermodulation distortion technique. This technique is licensed under Hekimian Laboratories, Inc. Patent No. 3862380. The 4944A TIMS computes the 2nd and 3rd order products and automatically corrects the readings for noise.  Applications for the 4944A TIMS include circuit routining, circuit troubleshooting and installation testing. The portable 4944A is designed for both field service use and test center use.