Agilent Technologies 8495D, Руководство по эксплуатации и обслуживанию

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8495D/K Attenuators Operating And Service Manual 3
Description
In the 8495K, each solenoid requires a drive of 20 to 30 V. The switching
current is approximately 125 mA at 24 Vdc per section for the 8495K. 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 on page 2 and
Figure 3 on page 5 ).
Table 1 Attenuator Switching
* D model only
** K model only
CAUTION
Do not exceed the RF power rating of 1 W average or 100 W peak with a
maximum pulse width of 10
µ
s. Do not connect an attenuator RF input or
output connector to greater the 7Vdc. If the attenuator must be connected to
a device with a potential greater than 7 Vdc, use a blocking capacitor.
Supplied Accessories
A solenoid drive cable is supplied with the 8495K. The cable is 1.5 m (5 ft)
long with a mating connector plug on one end and the other end is
unterminated (see
Figure 2 on page 4 ). The part number for this cable is
8120-2178, and is available as a spare or replacement. The cable connector
plug and contacts are available from Viking Industries Inc. The part number
is TKP12-100-P-TS-100-AU. The connector plug and contacts without the
cable can be ordered from a Viking distributor. Information on replaceable
parts is available in
Table 3 on page 5 .
Solenoid Cable
Connectors
Refer also to Figure 2 on page 4 .
Attenuator Sections
Attenuation
(dB)
1
10 dB
2
20 dB
3
20 dB
4
20 dB
10 X
20 X* X**
30 X X* X**
40 X X
50 X X X
60 X X X
70 X X X X