Motorola R-2002A Manual page 222

Although the R2008D/R20IOD can transmit only
one frequency at a time, it can switch frequencies at a
relatively fast rate, making it ideal for multiple fre-
quency checks necessary for more complete cellular
testing. Once the desired channel numbers are
selected in the initial parameters screen, the R2008D/
R2010D automatically switches its transmit and
receive frequencies to simulate transition from a for-
ward control channel tb a forward voice channel, or
from one voice channel to another, to simulate a cell
handoff.
The digital messages are modulated onto the duplex
generator automatically by the
R2008D/R201~D
Digital responses are decoded and analyzed to venfy
that the correct message has been sent back by the
cellular telephone. Necessary data is extracted for
verification, processing and display.
The required SAT frequency is produced by the
R2008D/R2010D and the transponded SAT is
checked. There are three possible SAT frequencies,
they are 5970, 6000 and 6030 Hz.
The 10 KHz signaling tone sent by the cellular tele-
phone is measured by the R2008D/R2010D to con-
firm successful handoffs, alert and release.
While in the voice channel, the frequency error, the
output power and the peak modulation of the cellular
telephone's carrier is constantly updated and dis-
played on the screen of the R2008D/R2010D.
Extensive software has been written to exercise the
cellular telephone in a variety of ways. Motorola's
approach to cellular testing has been to keep testing
as simple and comprehendable as possible without
sacrificing capability. In keeping with this ideal, a
thermometer style display is used that 'fills in' as the
test progresses. Help messages can be shown that
spell out the definition of each square in the ther-
mometer display. If a problem is encountered, warn-
ing and error message numbers are displayed. Tem-
porary exits are allowed so that the power of the
other R2008D/R2010D modes can be utilized.
The software version numbers for the 9 files that
comprise the R2008D/R2010D software can be seen
if a zero key is held down while the R2008D/R20 1 OD
is turned on. This version number display will stay on
the screen for 10 seconds; then normal operation en-
sues.
A manual test mode allows the operator to command
the cellular telephone with any one of the 43 com-
5
mands defined by the Advanced Mobile Phone SeT'
ice (AMPS) specification of May, 1983.
The following sections describe how to physically
Sl
up a test, using the RF interconnect or the manu;
test interconnect. Then, operator instructions on ho
to use the cell initiated test, the mobile initiated tes
and the manual test are detailed. A list of possib
warnirfg~and
errors is included in Appendix E.
4.1 Setup Instructions
Connection from the R2008D/R2010D to the mobil
unit require accessories included in separate kits.
RPX-4350A- Variable RF coupler (58-80313B37)
Junction box (RTL-4137A)
Printer/junction box cable
(01-80356A73)
TNC-BNC adapter (58-80313B33)
Self Test Enable Adapter
(RTL-4148A)
RPX-4272A - Adapter cables for junction box t·
AMPS type radios
RPX-4273B - Adapter cables for junction box t'
Motorola DYNA- T AC mode
T 19 AT A8822AE radios.
RPX-4274B - Adapter cables for junction bo
Motorola CT and ET series mobil
radios.
SIGNALING SEQUENCE TEST CONNECTION
The signaling sequence test mode requires an RF con
nection be made from the R2008D/R2010D to th
mobile unit. To couple the output from the duple:
generator to the main RF in/out connector, ;
variable tap RF coupler 58-80313B37, is used. Con
nect the male N connector on the coupler to th
R2008D/R2010D RF in/out port. Connect th
variable tap to the duplex generator output with •
short length of BNC to BNC coax Ol-80352A02
Connect the female N connector on the coupler to th
mobile unit antenna connector. A TNC and BN<
adapter, 58-80313 B33, may be required to connect tc
the mobile unit. See figure 2.
It is sometimes useful to access some test points
01
the control head to transceiver interface during th'
signaling test mode. This is accomplished by usinl
the cellular junction box RTL-4137 A and the ada pte
cables included in either RPX-4272A, RPX-4273B
or RPX-4274B.