The Keysight (Agilent/HP) 4934A Transmission Impairment Measurement Set (TIMS) is a rugged, portable analog circuit tester designed for telephone companies and service providers. Operating over a 20 Hz to 110 kHz bandwidth, it enables comprehensive transmission testing in compliance with the IEEE 743-1984 North American standard. Equipped with WECO 310 connectors and multiple weighting filters, the 4934A measures level/frequency, noise-to-ground, notched noise, SNR, 3-level impulse noise, and Peak-to-Average Ratio (P/AR) for installation and maintenance productivity.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | WECO 310 jacks, Dial/Talk Binding Posts |
| Display | Dual 4-digit LED displays |
Physical
| Parameter | Value |
|---|---|
| Operating Temperature | 0 to 50 |
Transmitter (Signal Generator) Specifications
| Parameter | Value |
|---|---|
| Transmitter Frequency Range | 20 Hz to 110 kHz |
| Transmitter Frequency Resolution | 1 Hz (20 to 9999 Hz), 10 Hz (10.0 to 99.9 kHz), 100 Hz (100.0 to 110.0 kHz) |
| Transmitter Output Level Range (600 Ω) | -40 to +13 dBm |
| Transmitter Output Level Resolution | 0.1 dB |
| Transmitter Output Impedances | 135 Ω, 600 Ω, 900 Ω |
Receiver Specifications
| Parameter | Value |
|---|---|
| Receiver Frequency Range | 20 Hz to 110 kHz |
| Receiver Level Resolution | 0.1 dB |
Noise and Distortion Measurements
| Parameter | Value |
|---|---|
| Noise Weighting Filters | C-message, 3 kHz flat, 15 kHz flat, Program, 50 kbit |
| Impulse Noise Counters | 3 independent counters up to 9999 counts |
| Peak-to-Average Ratio (P/AR) Range | 0 to 120 P/AR units |
Telecom and Signaling Interface Features
| Parameter | Value |
|---|---|
| Line Connection Modes | 2-wire, 4-wire |
| Dial/Talk Set Interface | Allows connection of standard test sets via binding posts |
Physical & Environmental
| Parameter | Value |
|---|---|
| Standards Compliance | IEEE 743-1984 North American standard |
Configuration & Options
| Parameter | Value |
|---|---|
| Bell Version Impedance Configuration | 135 Ω, 600 Ω, 900 Ω |
| CCITT Version (Option 010) Impedance Configuration | 150 Ω, 600 Ω, 900 Ω |
Technology
Analog Telecom Testing
Applications
Transmission Impairment Measurement