Overview
Table 3 8496G/H Attenuator Switching Order
8496G/H
Attenuator Sections
Atten | 1 | 2 | 3 | 4 |
(dB) | 10 dB | 20 dB | 40 dB | 40 dB |
|
|
|
|
|
0 |
|
|
|
|
|
|
|
|
|
10 | X |
|
|
|
|
|
|
|
|
20 |
| X |
|
|
|
|
|
|
|
30 | X | X |
|
|
|
|
|
|
|
40 |
|
| X |
|
|
|
|
|
|
50 | X |
| X |
|
|
|
|
|
|
60 |
| X | X |
|
|
|
|
|
|
70 | X | X | X |
|
|
|
|
|
|
80 |
|
| X | X |
|
|
|
|
|
90 | X |
| X | X |
|
|
|
|
|
100 |
| X | X | X |
|
|
|
|
|
110 | X | X | X | X |
|
|
|
|
|
Each solenoid requires a drive of 20 to 30 V with a switching current of approximately 125 mA* at 24 V dc per section. The solenoid switching time is less than 20 milliseconds including settling time. Once switched, the solenoid plungers are held in place by permanent magnets and the solenoid plungers automatically disconnect the selected coil drive and connect the opposite coil drive (see Figure 1 and Figure 2). This simplifies the coil driver circuit design and reduces the amount of heat dissipated by the solenoid coils since the solenoid coils are energized only for the 20 milliseconds switching time.
*For serial number prefixes below 1722A, change 125 mA to 110 mA.
48494/95/96G/H Operating And Service Manual