sames

RM2102DSE

5/16

http://www.sames.co.za

PRELIMINARY

SOLDERABLE SELECTOR SELECTION

Table 2: Jumper options

Name

These jumpers are used for calibration purposes. Also see "Calibrating the meter". Closing a

jumper will bypass the resistor in the resistor ladder.

Option

Description

J3 to J10

Closed

Leaving a jumper open will enable the resistor in the resistor ladder.

Open

Connecting to VSS will allow only negative energy to be measured.

J11

VSS

Connecting to VDD will allow only positive energy to be measured.

VDD

Connecting to jumper DIRO / DIRI will allow bi-directional energy measurement. (Bi-directional is

where both positive and negative energy is measured)

DIRO /

DIRI

Used to select the required rated conditions. See table 3 and 4 as well as figure 5 for further

details on the various settings available.

J14

VDD (+)

VSS

Used to select the required rated conditions. See table 3 and 4 as well as figure 5 for further

details on the various settings available.

J15

VDD (+)

VSS

Used to select the required rated conditions. See table 3 and 4 as well as figure 5 for further

details on the various settings available.

J16

VDD (+)

VSS

J18

VSS

Used to select between fast and normal pulse output mode on the calibration LED output. When connected to

VSS the normal pulse output mode is selected.

J17

VSS

Connecting to VDD selects the fast output pulse mode.

VDD (+)

When fast mode is selected this input can be used to enable or disable the internal pulse

stability circuitry for the LED output pulses. Connecting to VSS disables this circuitry.

J19

VSS (-)

Connecting to VDD enables this circuitry.

This selects the IC manufacturer’s test mode. For normal metering connect to VSS.

VDD (+)