Output Voltage and Attenuation

Calibration Procedure For Signal Gnerator Sg-1144/U Page Navigation
6

TB 9-6625-2077-24

(11) Move positive lead to A3TP4 (fig. 1).

(12) Adjust A3R33 (fig. 1) for a 1.000 V dc indication on audio analyzer.

(13) Repeat (6) above and adjust A3R25 (fig. 1) for 80.00 MHz on FREQUENCY

display (R).

(14) Set TUNING RANGE switch to 4-20 MHz.

(15) Adjust COARSE and FINE TUNING control for an indication of 20.00000 MHz on

measuring receiver.

(16) Adjust A3R22 (fig. 1) for 20.00 MHz on FREQUENCY display (R).

(17) Set TUNING RANGE switch to 1-5 MHz.

(18) Adjust COARSE and FINE TUNING controls for an indication of 5.00000 MHz on

measuring receiver.

(19) Adjust A3R19 (fig. 1) for 5.000 MHz on FREQUENCY display (R).

(20) Set TUNING RANGE switch to .25-1.25MHz.

(21) Adjust COARSE and FINE TUNING controls for an indication of 1.25000 MHz on

measuring receiver.

(22) Adjust A3R16 (fig. 1) for 1.250 MHz on FREQUENCY display (R).

(23) Set TUNING RANGE switch to 50-250 kHz.

(24) Adjust COARSE and FINE TUNING controls for an indication of 0.25000 MHz on

measuring receiver.

(25) Adjust A3R13 (fig. 1) for 250.0 kHz on FREQUENCY display (R).

(26) Set POWER switch to OFF and reinstall assembly A3 and extender board

(fig. 1) in proper locations.

(27) Set POWER switch to ON.

9. Output Voltage and Attenuation

a. Performance Check

(1) Connect sensor module to the power reference output. Perform sensor zero

(2) Connect measuring receiver power sensor to TI RF OUTPUT, and set

measuring receiver to measure frequency.

(3) Set TUNING RANGE switch to 1-5 MHz and adjust TUNING COARSE and

FINE controls as required for an indication of 3.000 MHz on FREQUENCY display.

(4)

Set measuring receiver to measure power.

(5) Set RF OUTPUT switch to +10.00 dBm and adjust RF OUTPUT LEVEL

control to indicate 0 dB on RF OUTPUT meter.