Connecting The Accessories; Adapter Setting - Keysight E4990A Help Manual

1. Furnished with the 42941A Impedance Probe Kit.
The 16085B Terminal Adapter cannot be used in place of
the 42942A Terminal Adapter. The 16048A BNC 1 m Cable, the
16048B SMC 1 m Cable, the 16048D BNC 2 m Cable, or the 16048E
BNC 4 m Cable cannot be used in place of the 16048G or 16048H.

Connecting the Accessories

1. Connect the measurement accessories to the E4990A.
2. Press the standby switch on the front panel of the E4990A to turn it
on.
3. Press Cal > Accessory or
accessories for measurement.
Whenever you connect accessories to or disconnect
accessories from the E4990A, you must turn off the dc bias
> DC Bias State). If this step is not taken, the dc bias may
Setup
destroy the device.
When you connect or disconnect accessories with the E4990A turned
on, error messages such as "Z measurement overload" may be
displayed on the LCD screen. However, this does not cause any
special problem. To turn off the messages, press

Adapter Setting

You must ensure that the adapter setting is properly set after you finish
connecting accessories to the four-terminal pair port of the E4990A and
before you start measurement. If required, change it to the correct adapter
setting. The adapter setting includes adapter selection and the data
acquisition process, which is called adapter setup. The following table lists
the device connections and corresponding adapter settings.
Device Connections and Adapter Settings
Device
Accessory
Connection
A. Connect a 16034E
direct
16034G
connection
Instr Setup > Accessory to select the
Adapter (√: required; blank: not required)
Selection
Phase
*1
No
Adapter
Measurement
(Sweep
Entry Off.
Adapter Setup (data
measurement)
OPEN SHORT
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