R&S®EFA78/89 Test Receiver (D/K or I Analog TV)
Analog TV Test Receivers
The analog R&S EFA models provide high-precision demodulated baseband signals (vision and sound) for measurements in various applications (TV transmitters, cable headends, coverage measurements, R&D). At the same time, all relevant RF parameters are monitored at high speed and represented in a logical manner (Fig. 13). User-configurable alarm messages permit unattended monitoring of the received signals as well as switchover to alternative links in the event of a failure.
The high-end demodulator version is used for on-site measurements on TV transmitters. This version offers particularly lowdistortion demodulation of the broadcast signal. It is perfectly suited for these types of measurements; its low measurement uncertainty permits optimal alignment as well as permanent quality control of transmitters.
Fig. 13: Measurement window
All parameters for the demodulated standard B/G TV channel are displayed on a single screen and can be checked at a glance:
- Vision carrier level
- Video modulation depth
- Sound intercarrier measurements
- Vision/sound level ratio
- Sound 1 & 2 FM deviation
- Pilot decoding
