Extech 380405 Manual

Extech Ikke kategoriseret 380405

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Model 380405- - _V 4 5/ en GB 1. 18

User Manual

Capacitance Decade Box

Model 380405

Introduction

Congratulations on your purchase of the Extech Capacitance Decade Box. This 380405

device oers 5 decades of capacitance ranges from 100pF to 11.111uF (in 100pF steps).

Slide switches allow easy addition and subtraction of capacitance values. Binding posts (3)

oer simp and secure connections. Careful use of this decade box will provide years of le

reliable service.

Specications

Capacitance ranges 100pF to 11.111uF in 100pF steps

Internal Residual Cap 50pF maximum :

Voltage limit 50VDC ( -polarized capacitors) non

Connection Three (3) binding posts

Accuracy 5% (< =1uF: 1kHz test frequency; > 1uF: 100Hz test frequency)

Operating conditions Temperature: 0 to 50oC (32 to 122oF) / Humidity: < 80%RH

Dimensions/Weight 7 x 11.7 x 3.3 (5.79 x 4.61 x 1.3") Approx. 312g (0.69 lbs) 14. cm /

Operation

Binding Post Connections

The binding posts can be used for connections in several ways:

1. A banana plug can be inserted directly into the posts.

2. Bare wire can be threaded through the post after it has been unscrewed. Once the bare wire is threaded, tighten the posts as necessary.

3. Alligator clips can be used but use caution not to strip the post threads or plastic post housing.

The Capacitance output is available on the RED and the BLACK binding posts. The WHITE post is case ground and is typically not used. Connect the

positive lead of the device under test to the RED post. Connect the negative lead to the BLACK post. Use the WHITE grounding post only if the device

under test will be grounded to the 380405 case.

Range Selection

The front panel switches are used to select the capacitance that will be output on the RED and BLACK terminals. When a switch is set to the IN 20

position, the value printed above the switch is added to the total capacitance available at the posts. When the switch is set to OUT it is excluded from