Handbook for Sound Engineers

1192 Chapter 32 Also consider that consumer audio and video equip- ment is responsible for about ten electrocutions every year i ...

Grounding and Interfacing 1193 differences can be developed between connection points to it.^18 Therefore, it should come as no ...

1194 Chapter 32 32.4.4.2 Parasitic Capacitances and Leakage Current Noise In every ac-powered device, parasitic capacitances (ne ...

Grounding and Interfacing 1195 it flows through a person’s body. More relevant is the fact that these noisy leakage currents wil ...

1196 Chapter 32 First is degraded noise rejection, which appeared when solid-state differential amplifiers started replacing inp ...

Grounding and Interfacing 1197 upper and lower arms have widely differing imped- ances—e.g., when upper arms are very low and lo ...

1198 Chapter 32 IEC had recognized that test is not an adequate assur- ance of the performance of certain electronically balance ...

Grounding and Interfacing 1199 To the user, symptoms are indistinguishable from many other noise coupling problems such as poor ...

1200 Chapter 32 Fig. 32-33 shows three devices whose design does not allow shield current to flow in signal reference conductors ...

Grounding and Interfacing 1201 one point to keep it at ground potential and guard against RF interference.26,27 Based on my own ...

1202 Chapter 32 imperfections. But, as discussed in Section 32.6.4, it is virtually always superior to an unbalanced interface! ...

Grounding and Interfacing 1203 Unlike balanced interconnections, such noise pickup is not nullified by the receiver. 32.5.5 Band ...

1204 Chapter 32 (32-10) Most listeners describe 10 dB level decreases or increases as halving or doubling loudness, respectively ...

Grounding and Interfacing 1205 32.6.2.2.1 For Unbalanced Interfaces STEP 1: Unplug the cable from the input of Box B and plug in ...

1206 Chapter 32 STEP 4: Leaving the dummy in place on the cable, plug the dummy into the output of Box A as shown below. i Outpu ...

Grounding and Interfacing 1207 32.6.3 Solving Interface Problems 32.6.3.1 Ground Isolators A device called a ground isolator sol ...

1208 Chapter 32 the CATV drop or antenna and its lightning ground connection (see Section 32.4.1). Isolators will not pass dc op ...

Grounding and Interfacing 1209 Figure 32-46. Measured hum rejection versus source impedance, active differential amplifier versu ...

1210 Chapter 32 directly grounded at the driver end, which reduces the interface to an unbalanced one with no noise rejection.^4 ...

Grounding and Interfacing 1211 tolerance parts or better to maintain impedance balance. The balanced filter can be used for low- ...