The PCM Decoder is used to demodulate a serial PCM signal generated by the PCM Encoder, or a parallel PCM signal generated by either the PCM Encoder or the DPCM Decoder, and to recover the original analog signal. A bar graph indicator for the test bus shows the logic states of the 8-bit D/A converter input. Using the PCM Decoder, students gain familiarity with PCM decoding and D/A conversion processes. The effects of compression and expansion on weak and strong signals can be investigated also.

Specifications

Power Requirements: Connection to the Enclosure / Supply Regulator, Model 9420 (not included)

PCM Input Voltage: TTL

Input Codes

• Offset Binary
• Sign Offset
• μ2-Type Expansion
• A1-Type Expansion

Audio Output

• Nominal Voltage: 2 V p-p (gain control at CAL position)
• Maximal Voltage: 10 V p-p
• Impedance: 600 Ω
• Frequency Range: 300 Hz to 5 kHz

Fault-Insertion Switches: 8
Test Bus: 1

Physical Characteristics
Dimensions (H x W x D) 83 x 142 x 212 mm (3.3 x 5.6 x 8.3 in)
Net Weight 0.8 kg (1.8 lb)