Agilent Technologies HP 8566B Spécifications télécharger pdf (Page 179)

2. High-Voltage Adjustment (SN 3001A and Below)

41. The High-Voltage Adjustment is completed. If an AlA2,

AlA4,

AlA

assembly has been repaired or replaced, perform

adjustment procedure 3, “Preliminary Display Adjustment (SN

3001A and Below)“, and then adjustment procedure 4, “Final

Display Adjustments (SN 3001A and Below)“. If the AlA2,

AlA4, and

AlA

assemblies function properly and do not require

compensation, proceed directly to adjustment procedure 4, “Final

Display Adjustments (SN 3001A and Below)“.

Discharge

Procedure

The adjustment procedures in this manual do not require the removal

for

High

Voltage

and

or discharge of the

AlA

High-Voltage Regulator or CRT assemblies.

CRT

However, if for any reason the

AlA

High Voltage Regulator Assembly

or the post-accelerator cable must be removed, the following

procedure ensures the proper safety.

Warning

This procedure should be performed by qualified personel only.

Voltages are present which, if contacted, could cause serious

personal injury. Approximately -4000 V dc is present on the

AlA

High-Voltage Regulator assembly even when the ac line

cord is disconnected. The CRT can hold a + 18

dc charge

for several days if the post-accelerator cable is improperly

disconnected.

Warning

Do not handle the

AlA

High-Voltage Regulator Assembly or

AlAl

1 High-Voltage Multiplier until the following high-voltage

discharge procedure has been performed.

1. Set the spectrum analyzer’s LINE switch to STANDBY, remove the

ac line cords, and remove the

AlA

High Voltage Regulator safety

cover.

Warning

With the ac power cord disconnected, voltages are still present

which, if contacted, could cause serious personal injury.

Warning

In the following step, a large arc of high voltage should be drawn.

Be careful.

2. Locate the snap connector on the CRT post-accelerator cable.

It is shown in Figure 3-11 as item 1. Using a long flat-bladed

screwdriver with an insulated handle, carefully pry the connector

loose but do not disconnect the cable.

a. Using one hand, remove the end of the cable labeled item 2

in Figure 3-l

As the end of the cable becomes free, touch

the end of the cable to the CRT’s metal cover. A large arc of

high voltage should ground to the CRT cover. The CRT is not

discharged yet!

b. Reconnect the CRT post-accelerator cable, and repeat the above

step until high-voltage arcs no longer appear.

3. Leave the CRT post-accelerator cable disconnected, and remove

the cover on the

AlA

High Voltage Regulator.

Adjustments

3-39

1 2 ... 174 175 176 177 178 179 180 181 182 183 184 ... 404 405

Commentaires sur ces manuels

Pas de commentaire

Agilent Technologies HP 8566B Spécifications Page 179

Commentaires sur ces manuels

Produits connexes et manuels pour Mesure, test et contrôle Agilent Technologies HP 8566B