changeset 280:493bfe847128

compal/c139-{rssi,txcal}: results of C139 to CMU200 experiment
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 17 Feb 2019 00:42:34 +0000
parents a7707c174510
children b7d93ff628a8
files compal/c139-rssi compal/c139-txcal
diffstat 2 files changed, 19 insertions(+), 0 deletions(-) [+]
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/compal/c139-rssi	Sun Feb 17 00:42:34 2019 +0000
@@ -0,0 +1,13 @@
+The following RSSI display thresholds have been observed on a North American
+C139 phone (sw ver 1.0.07) tested on our CMU200 in the PCS band; each number of
+bars given below appears when the BCCH signal level on the CMU200 is set to
+greater than or equal to the corresponding number:
+
+5 bars threshold: -86 dBm
+4 bars threshold: -94 dBm
+3 bars threshold: -98 dBm
+2 bars threshold: -102 dBm
+
+1 bar appears until complete loss of service
+
+No Pirelli-like 5 dB hysteresis is seen on this phone.
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/compal/c139-txcal	Sun Feb 17 00:42:34 2019 +0000
@@ -0,0 +1,6 @@
+Calibrated Tx power levels on a North American C139 phone, PCS band: testing
+with CMU200 reveals that the highest PCL 0 is calibrated to 29.2 dBm (0.8 dB
+down from the spec number of 30 dBm, same as TI LoCosto document), PCL 1 is
+calibrated to 27 dBm (1.0 dB down from the spec number of 28 dBm, looks like
+an outright bug in Compal's calibration setup), all other PCLs are calibrated
+to spec numbers.