Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL TMX/TMR RFL Electronics Inc.
January 25, 2012 11 (973)
334-3100
Table 4. continued - Controls and indicators, RFL TMX Telemetry Transmitter module
Item Name/Description Function Setting
7 Potentiometer R27 Trim for reference voltage at TP2
+10.240 volts +/-500μv at TP2
8 Potentiometer R33 Null calibration adjust for analog channel 1
(J3 must be jumpered)
Logic 1 at J2-1 when A/D converter
output is 0 or +/- one bit away from zero.
9 Potentiometer R36 Null calibration adjust for analog channel 2
(J4 must be jumpered)
Logic 1 at J2-2 when A/D converter
output is 0 or +/- one bit away from zero.
10 Potentiometer R39 Null calibration adjust for analog channel 3
(J5 must be jumpered)
Logic 1 at J2-3 when A/D converter
output is 0 or +/- one bit away from zero.
11 Potentiometer R42 Null calibration adjust for analog channel 4
(J6 must be jumpered)
Logic 1 at J2-4 when A/D converter
output is 0 or +/- one bit away from zero.
12 Test point TP1 Digital ground Digital ground
13 Test point TP2 Reference voltage
+10.240 volts +/-500μv
14 Test point TP3 +12VDC +12VDC
15 Test point TP4 -12VDC -12VDC
16 Test point TP5 Channel 1 filtered analog input signal NA
17 Test point TP6 Channel 2 filtered analog input signal NA
18 Test point TP7 Channel 3 filtered analog input signal NA
19 Test point TP8 Channel 4 filtered analog input signal NA
20 Test point TP9 Analog ground Analog ground
21 Connector J1 ACTEL access pins For factory use only
22 Jumper J2-1 Zero null access point for channel 1 Logic 1 when A/D converter
output is 0 or +/- one bit away from zero.
Jumper J2-2 Zero null access point for channel 2 Logic 1 when A/D converter
output is 0 or +/- one bit away from zero.
Jumper J2-3 Zero null access point for channel 3 Logic 1 when A/D converter
output is 0 or +/- one bit away from zero.
Jumper J2-4 Zero null access point for channel 4 Logic 1 when A/D converter
output is 0 or +/- one bit away from zero.
23 Jumper J3 Enables null calibration for channel 1 Enabled when J3 is set away from fingers.
24 Jumper J4 Enables null calibration for channel 2 Enabled when J4 is set away from fingers.
25 Jumper J5 Enables null calibration for channel 3 Enabled when J5 is set away from fingers.
26 Jumper J6 Enables null calibration for channel 4 Enabled when J6 is set away from fingers.
Table 5. Calibration data switch settings
SW4-1 SW4-2 SW4-3 Function
OFF OFF OFF Live data on all analog channels
OFF OFF ON Calibration data on analog channel 1 only
OFF ON OFF Calibration data on analog channel 2 only
OFF ON ON Calibration data on analog channel 3 only
ON OFF OFF Calibration data on analog channel 4 only
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