User's Manual

Using the A73x RTU

• the GSM modem is on

• there is a valid SIM card inserted

• the SIM card was activated with a valid PIN code.

Additional information is also listed but this should be of no concern for the user,

except the PUK required entry. If this parameter is Yes, it can be the result of

entering a wrong PIN code three times in a row. You can see this also in the last

string displayed by the GSMSTAT command (number of retries left).

To re-activate the card you will need its PUK number, which you get also from your

cellular provider with the SIM-card. To reactivate the card, enter the command

GSMPUK pppppppp nnnn (where pppppppp is the PUK code and nnnn is the

new pin code). Note that the new pin code will immediately be used and will

activate the SIM card.

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WARNING: Your A733GSM RTU has an internationally unique identification number (IMEI).

You will find this number on a leaflet packaged with your device, and it is needed in

case of loss of the device. Please keep it in a safe place.

2.4 Field Installation

Installing A73x RTUs in the field is a fairly simple process. You’ll perform a

connectivity check with an LED tool (does not apply to A733GSM RTUs). The LED

tool is shown in Fig. 5.

Fig. 5: LED Tool

Note: The LED tool is a blind plug to be plugged into the POWER connector.

Follow these steps to install an A73x RTU in the field:

1. Review the installation area and choose the best site (for the A733GSM RTU

skip to Step 2.3).

2. Perform a connectivity check using the LED tool:

a. Insert the LED tool in the POWER connector and wait up to 10

seconds. If the unit connects to at least one station (or a base station),

it will light up the LED for about 4 seconds.

b. Keep observing the LED tool and, after several more seconds, the LED

will blink one or more times (the number of blinks indicates the number

of stations it has successfully contacted).

Note: For the A733GSM, make sure that you have sufficient RF signal from your cellular

service provider. The simplest way to achieve this is to check a cellular phone

operated by the same cellular service provider on the site where you want to install

the RTU.

3. Assemble your pole set.