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1. RSSI SIGNAL STRENGTH TESTING PROCEDURE
Parts Required for RSSI Test: G9 Telemeter and a Magnetic Base Antenna
Optional: A Card Reader and a High Gain Antenna (see note) of 4’or 8’ cable length
(#VXWUP1101284 or #VXWUP3101284, respectively)
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 antenna for the best reception. Where
the antenna receives the best signal will also determine where to mount the Telemeter.
NOTE: A High Gain Antenna should be on hand in the event that the included Mag-
netic Base Antenna is unable to pick up a sucient signal. A High Gain Antenna must
be purchased separately as it is not included with the kit.
1. At the machine location, plug the antenna’s cable into the ANTENNA port found
on the bottom of the G9 Telemeter. If a Card Reader is present, plug the serial
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 G9 Tele-
meter to the MDB connectors of the vending machine.
3. Place the antenna on top of, or inside the vending machine on a metal surface to
perform the test. Make sure the antenna is not surrounded by signal weakening
metal support brackets or located near the Telemeter or the control board when
the door is shut. This will improve connectivity to the cellular tower.
4. Wait until the 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 antenna to another location and
wait 15 seconds until the signal stabilizes and then recheck. If signal strength is
not strong enough with the normal Antenna, try the test with a High Gain An-
tenna.
7. Upon completion of testing, disconnect the G9 Telemeter’s MDB cable and recon-
nect 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.
