TB 9-6625-2137-35
(14) Connect calibrator wideband to multimeter INPUT terminals. Set multimeter
for ac voltage measurements and press calibrator WBND pushbutton.
(15) Set calibrator for an initial 0.273861 V, 1 kHz wideband output. Adjust
calibrator for a multimeter indication equal to value recorded in (1) above ( 5 digits).
(16) Press calibrator NEW REF pushbutton; then set to STBY.
(17) Remove wideband output from multimeter and connect to TI 10 k ⎮⏐50 pf
connector. Set calibrator OPR/STBY to OPR.
(18) Press TI ENTRY [FREQ] [1] [kHz] pushbuttons (pause until an internal CAL
cycle is completed).
(19) Set calibrator frequency to 2 MHz and set TI for a carrier frequency of 2 MHz by
pressing ENTRY [FREQ] [2] [MHz] pushbuttons. TI will indicate 00.00 (0.2) dBm.
(20) Repeat technique of (19) above for 15 MHz. TI will indicate 00.00 (0.2) dBm.
(21) Repeat technique of (19) above for 20 MHz. TI will indicate 00.00 (0.25) dBm.
b. Adjustments. No adjustments can be made.
13. Half Power Bandwidth
a. Performance Check
(1) Press TI pushbuttons as listed in (a) through (c) below:
(a) [RECALL] [0] and AUTO CAL (off).
(b) [RECALL] [.], [CNTR FREQ], and [7].
(c) MEASUREMENT/ENTRY [OFFSET], ENTRY
[RDNG
OFFSET],
FREQUENCY TUNE [AUTO], and BANDWIDTH [20 Hz].
NOTE
It may be necessary to press TI FREQ STEP pushbutton for
fine tuning to get proper dBmO indication.
(2) Tune TI frequency control above 1 MHz for a -3 dBmO indication, and record
frequency indication.
(3) Tune TI frequency control below 1 MHz for a -3 dBmO indication and subtract
frequency reading from reading recorded in (2) above. The difference between the two
frequencies will be between 18 and 22 Hz.
(4) Repeat (1) through (3) above for 400 Hz bandwidth. The difference between the
two frequencies will be between 360 and 440 Hz.
