TB 9-6625-2170-24
(12) Press FUNCTION dBm 600: pushbutton and record TI indication.
(13) Release RESPONSE RMS/AVG pushbutton to AVG and adjust AVG 0 (fig. 2)
until TI indicates same value recorded in (12) above (R).
(14) Press FUNCTION VOLTS pushbutton.
(15) Press RESPONSE RMS/AVG pushbutton to RMS.
(16) Set calibrator for a 1.5 V, 1 kHz output.
(17) Adjust RMS CAL (fig. 3) until TI indicates 1.500 V r0.001 V (R).
Figure 3. Test instrument - left view.
(18) Release RESPONSE RMS/AVG pushbutton to AVG.
(19) Adjust AVG CAL (fig. 2) until TI indicates 1.500 V r0.001 V (R).
(20) Press RESPONSE RMS/AVG pushbutton to RMS.
(21) Set calibrator for a 1 V, 60 kHz output.
(22) Record TI indication.
(23) Set INPUT RANGE switch to 20 V.
(24) Set calibrator amplitude to 10.00 V.
(25) Adjust C2061 (fig. 1) for a TI indication 10 times greater than that recorded in
(22) above (R).
10. dBm and dB Ratio
a. Performance Check
(1) Connect calibrator OUTPUT HI and LO to TI INPUT + and -.
(2) Position controls as listed in (a) through (d) below:
(a) INPUT RANGE switch to AUTO RANGE.
(b) FUNCTION dBm 600: pushbutton pressed.
(c) FUNCTION LEVEL pushbutton pressed.
(d) All FILTERS pushbuttons released.
