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> Hp 4948A in service transmission impairment as-is
Hp 4948A in service transmission impairment as-is
For Sale is a used Hewlett Packard HP 4948A In-Service Transmission Impairment Measuring Set with Option 002.
** Voice-grade data circuit testing - without disturbing traffic
** True preventive maintenance
** Network management information - without special modems
** Suitable for North American and CCITT environments
** Test data circuits carrying voice grade modem traffic while they are still in service
** A simple connection to the data circuit carrying the modem signal, at a voice frequency access point, is all that is required
** To measure the impairments that have been added between signal generation and the measurement point
** Compatible Modems (Note: may not represent complete list):
Compatible Modem Types (4-Wire)
9600 bps CCITT V.29, AT&T 209, AT&T 2096 V.29 with 1800Hz carrier 4x4 QAM with 1700Hz carrier
4800 bps CCITT V.27, AT&T 208, AT&T 2048
2400 bps CCITT V.26 A&B, AT&T 201 B&C
** Measuring Impairments on a Modem Signal: measures the effects of the same line impairments that are measured by a conventional, intrusive TIMS
** Data Logging: result data can be stored in the test set's own internal non-volatile memory
** Out-of-Service Testing: transmit and measure on a tone, so it can interwork with tone sources and conventional test sets
** Transmit & Receive Connectors: WECO 310 & Bantam
