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1. RSSI SIGNAL STRENGTH TESTING PROCEDURE
Parts Required for RSSI Test: G10-S Telemeter and a Magnetic Red Base Antenna
Optional: A Card Reader
An RSSI test is done to determine if there is acceptable signal strength at a location be-
fore installing. The test also helps to place the antennas for the best reception. Where
the antennas receive the best signal will also determine where to mount the G10-S
Telemeter inside the machine.
1. At the machine location, plug the antennas’ cables into the ANTENNA ports found
on the bottom of the G10-S Telemeter. If a Card Reader is present, plug the cable
from the Card Reader into the Telemeter cable’s 6-pin black connector.
2. Disconnect the MDB connectors in the vending machine between the machine
control board and the bill acceptor and connect the MDB Cable* from the G10-S
Telemeter to the MDB connectors of the vending machine.
3. Place the antennas on top of, or inside the vending machine on a metal surface
no closer than 6 inches apart to perform the test for the planned installation
location. Make sure the antennas are not surrounded by signal weakening metal
support brackets or located near the G10-S Telemeter or the control board when
the door is shut. This will improve connectivity to the cellular tower.
4. Wait until the G10-S Telemeter has initialized, which is indicated by a blinking
green LED. If a Card Reader is present the display will read “Swipe or Tap to Begin.”
5. To begin testing, press the Telemeter’s RSSI buton. The Telemeter’s
LEDs will indicate signal strength. And if present, the Card Reader’s
display will show CSQ: XX, YY; where XX is signal strength and YY is
Bit Error Rate. Use the following table to determine signal quality.
QUALITY
TELEMETER LEDs
CSQ: XX
CSQ: YY
Very poor
none
00 to 07
Any value other
than 00 for CSQ:YY
indicates addition-
al signal loss.
Poor
RED
08 to 09
Good
RED and YELLOW
10 to 14
Very good
RED, YELLOW and GREEN
15 to 19
Excellent
RED, YELLOW, GREEN and BLUE
20 or greater
6. If signal strength is poor or very poor, move the antennas to another location and
wait 15 seconds until the signal stabilizes and then recheck.
7. Upon completion of testing, disconnect the G10-S Telemeter’s MDB cable and
reconnect the vending machine MDB connectors.
RSSI Button
* When a Bill Recycler is present, the ePort must be plugged into the MDB bus ahead of the
Bill Recycler to receive enough power to function properly.
