Fast, automatic testing

The TesCom 635-1 QuickBERT-T1 test set makes quick and easy work of T1 facility ver-ification and troubleshooting. Plug in this tester and instantly get essential information including framing type, line coding, BERT pattern, T1 signaling and frame synchroniza-tion status, alarm conditions, density viola-tions, and framing loss. Error conditions are also automatically displayed such as: bipolar violations, frame bit errors, CRC errors (ESF), and bit errors in a received BERT pattern. For long-term testing, history status is provided to indicate intermittent problem conditions. And for further analysis, test results can be printed.

The QuickBERT-T1 gives you fast, in-depth test features without time lost in configur-ing the test or remembering setups and menus. The lightweight, rugged design makes this handheld instrument easy to use in any location.

The 6351 QuickBERT-T1 is equipped with a T1 transmitter. If significant problems have developed, an out-of-service BERT may be necessary. BERT or Fractional T1 BERT may be performed by simply connecting the unit to the facility, transmitting the appropriate loop code, and selecting a pattern. The QuickBERT-T1 does the rest.

Decodes and displays signaling and data bits

For individual channels, the QuickBERT-T1 decodes and displays signaling and data bits associated with each of the 24 DS0s. The audio quality of the channel is quickly deter-mined via the internal speaker or external headset. If more precise analog measurements are necessary, the frequency and level of a tone present on a channel can be dis-played on the LCD screen.

Independently transmits and receives

The transmitter of the QuickBERT-T1 is inde-pendent from the signal on the receiver, allowing you to transmit one BERT pattern while receiving another.

Tests at any point in the span or in-service testing

The QuickBERT-T1 is equipped with a full-range primary receiver, which allows use at any access point on the T1 facility (e.g., monitor jack or bridge access point). The test set determines the level and frequency of the T1 signal. For out-of-service testing, it may also be used to ter-minate a T1 span.

Solves timing problems

Timing is one of the most common sources of error within a T1 network. The 635-1 QuickBERT-T1 contains a secondary reference receiver for use in measuring clock slips. When a sig-nal is present on both the primary and sec-ondary receivers, the test set registers and displays the timing differential between the two clocks. If clock synchronization is caus-ing the problem, it can be readily deter-mined and isolated without additional test equipment. The reference receiver in the QuickBERT-T1 may also be used for an exter-nal precision transmit clock source.