Setting Up The Transducer And Ldx-4 - Omega LDX-4 User Manual

5.0: Setting up the Transducer and LDX-4

The LDX-4 may be set-up with output signals anywhere within a ±10 VDC or ±20
mA range. Typical outputs are
±10 VDC, ±5 VDC, 0-10 VDC and 4-20 mA. These procedures apply to voltage
and current output.
Voltage and current output are available at the same time, although they can-
not be individually adjusted. Either voltage or current should be chosen as the
calibration reference.
All outputs use 0 V signal as the signal reference.
A list of standard link settings is available, see section 5.2.
CAUTION:
During installation and adjustment, the top of the enclosure has to be
removed for access to user adjustments.
At this time, standard ESD handling precautions for electronic equipment should
be followed.
5.1: Option Links - Explained
The table below and subsequent diagrams explain the link functions and show
the factory setting.
Link
Course Gain
Fine Gain
Course Offset
Fine Offset
(7) Null
Freq.
Input Resistance
Polarity (FR)
Input Gain
Link O N Link P A R K E D
Description
Sets the basic gain
Adjustment between
course gain ranges
Shifts the output by a
fixed amount
Fine trim around any
fixed offset
Used during set-up to
null output
Selects transducer
primary frequency
Sets transducer
secondary load
Enables output signal
direction change
Input Gain of x1, x2,
x4 or divide 2
Link O F F
Options
1 link on Positron 1 to 6
Potentiometer Adjustment
Link ON -VE or +VE and
Link ON 5V or 10V
No offset - Link Parked
Potentiometer Adjustment
ON, OFF
Lo - ON, Hi - Parked
100 KW Parked, 10 KW -
ON, 2 KW - ON
2 Links across Forward or
Reverse
X1 - Parked, X2 - ON, X4 -
ON, DIV2 - ON
Standard Setting
Link ON Position 1
Mid Position
No offset - Links
Parked
Mid Position
OFF
Hi Freq. - Link Parked
100 KW - Link Parked
F Position - 2 Link ON
Link parked on X2
F IN E G A IN
N U LL
-V E
+V E
5V
10V
C O A R S E
O F F S E T
G B K W R B