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Step #2 - Dialing the Local Modem (continued)

3) Go to Online Data Mode.  There are three ways you can do this:

The first way is to wait for the “no activity kill timer” to expire, after 
which you will go automatically into Online Data Mode.   In the 
default setting, this should take about 20-30 seconds after you 
have dialed the modem.  Second, you can key AT[O to go directly 
from PassThru Mode to Online Data Mode.  Third, if you have set 
the AT[Xn parameter to n=1 and the AT[Kn parameter to n=0, the 
Model 3022 will go into Online Data Mode as soon as it sees CD 
on the modem.

Step #3 - Verifying the Remote Setup Parameters

If you have performed steps 1 and 2 correctly, the Local Model

3022 should be in Online Data Mode, and you should have an active
connection between the local and remote modems.  Check to see that
the activity LED on your local Model 3022 is ON.  If not, consult Section
7.0 Troubleshooting

Assuming that you have a good connection and are in Online Data

Mode, the next step is to verify the setup parameters of the remote
Model 3022.  Follow these instructions:

1)  Key \\\ to go to Local Online Command Mode.  This will keep 

your modem connection active, but will allow you to enter 
commands as well (remember, you cannot enter commands in 
Online Data Mode).

2) Key AT[D1 to go to Remote Online Command Mode.  This will 

let you send commands to the 

remote Model 3022.  To verify that 

you are in Remote Online Command Mode, key AT@.  The unit 
should respond “OK”.

3) Key AT@V3 to view the setup parameters of the remote Model 

3022 DB-25 port.  Check to see that these parameters match 
those of your local modem.  If not, change the necessary 
parameters using the AT@ commands listed in Section 5.0.

4) Key AT@V1 and repeat the above process for sub-channel 1.

5) Key AT@V2 and repeat the above process for sub-channel 2.

6) If all three sets of parameters match those of your system, move

to step #4.

(continued)

19

20

Step #1 - Verifying Local Setup Parameters

The first step in using the Model 3022 is checking to see that the 

local Model 3022 is connected and configured properly.  Follow 
these instructions:

1) Power up the local modem.  This should power up the local 

Model 3022 and put the unit automatically in Local Offline 
Command Mode.  You will now have 2 minutes to key in the next 
command before the Model 3022 times out and goes into Online 
Data Mode.  (If you do time out and go to Online Data Mode, you 
will not be able to enter any commands.  Simply Key \\\, then AT[H
to return to Local Offline Command Mode.)

2) Key AT[ from the terminal connected to port 1 or port 2.  The 

unit responds “OK” to let you know you are in a command mode.

3) Key AT[V3 to view the setup parameters of the local Model 3022

DB-25 port.  Check to see that these parameters match those of 
your local modem.  If not, change the necessary parameters using 
the  AT[ commands listed in Section 5.0.

4) Key AT[V1 and repeat the above process for sub-channel 1.

5) Key AT[V2 and repeat the above process for sub-channel 2.

6) If all three sets of parameters match those of your system, move

to step #2.

Step #2 - Dialing the Local Modem

After confirming the proper configuration of the local Model 3022,

the next step is to dial the local modem so you can make a connection
to the remote modem and Model 3022.  Follow these instructions:

1) Key AT[Y0 to go from Local Offline Command Mode to 

PassThru Mode.  The unit responds “OK”.  You are now connected
directly to your local modem, with the multiplexing function of the 
local Model 3022 disabled.  It is as if your terminal has a straight 
through connection to the modem.

2) Dial the local modem as you normally would if directly 

connected. (example: ATDT13019751000).  After handshaking 
procedures, the unit responds “Connect 9600”.

(continued)

Summary of Contents for 3022

Page 1: ...USER MANUAL MODEL 3022 MicroStat II Miniature Statistical Multiplexer SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 Part 07M3022 B Doc 068021UB Revised 12 19 95...

Page 2: ...nstallation or use of this product shall be deemed an acceptance of these terms by the user 1 1 RADIO AND TV INTERFERENCE The Model 3022 generates and uses radio frequency energy and if not installed...

Page 3: ...X ON X OFF flow control Connecting directly to the modem s DB 25 port the Model 3022 derives power from the RS 232 interface and requires no AC power or batteries for operation Async input devices con...

Page 4: ...20 DTR 3 7 SG 4 3 RX Data 5 2 TX Data 6 5 CTS 7 4 RTS 8 continued PC AT to Model 3022 Pin Outs Serial DB 9 Model 3022 RJ 45 Pin No Pin No 6 DSR 1 1 CD 2 4 DTR 3 5 SG 4 2 RCV Data 5 3 TX Data 6 8 CTS 7...

Page 5: ...devices connected to sub channels 1 and 2 must support local flow control flow control between the device and the sub channel port In all cases the flow control setting of each Model 3022 port must m...

Page 6: ...operate the Model 3022 it is important to know how the unit handles command entry This section provides rules for command entry describes result codes and gives a complete description of each valid A...

Page 7: ...__________________________________________________ AT Command line prefix The attention command precedes all other commands listed below Directs the local Model 3022 to execute the following commands...

Page 8: ...nute n 4 1 minute n 5 75 seconds n x x 4 minute Note if K0 is selected the local Model 3022 will stay in Local Offline Command Mode indefinitely until either CD of the main channel becomes active if t...

Page 9: ...oftware reset with all Model 3022 modes and channel configurations set to previously stored values The Model 3022 will then enter offline command mode Note The user must wait approximately 5 seconds a...

Page 10: ...22 Using these instructions plus the AT command descriptions in Section 5 0 you should be able to operate the Model 3022 in almost any application If you have additional questions do not hesitate to c...

Page 11: ...and repeat the above process for sub channel 2 6 If all three sets of parameters match those of your system move to step 4 continued 19 20 Step 1 Verifying Local Setup Parameters The first step in us...

Page 12: ...well Any configuration changes you have entered will be stored in the Model 3022 s non volatile memory if they have been saved with the AT W or AT W command 21 22 7 0 TROUBLESHOOTING SYMPTOM POSSIBLE...

Page 13: ...ds power Plug it into an RS 232 port or obtain Model 3P MF power supply adapter SYMPTOM POSSIBLE PROBLEM SOLUTION 8 Modem connection has been established but 3022 will not pass data Model 3022 is stil...

Page 14: ...te 3022 times out or issue AT O to remote 3022 Issue AT Y0 to Model 3022 Consult modem manual SYMPTOM POSSIBLE PROBLEM SOLUTION APPENDIX A SPECIFICATIONS Sub Channels Serial Devices Interface RJ 45 V...

Page 15: ...om the model number suffix combinations shown on the previous page Do not combine these part numbers with the model number of the standalone unit when ordering These are separate items Patton Part Num...

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