TB 9-6625-2235-24
b. Adjustments
(1) Position controls as listed in (a) through (e) below:
(a) TUNING control to 280 MHz.
(b) FREQ SPAN/DIV switch to 200 kHz.
(c) RESOLUTION BW switch to 1 MHz.
(d) INPUT ATTEN switch to 0 dB (OPTIMUM INPUT switch to -40 dBm).
(e) REFERENCE LEVEL switch to -20 dBm.
(2) Connect CAL OUTPUT to INPUT 50Ω.
(3) Adjust REF LEVEL FINE control to position signal level 7.1 divisions above
graticule baseline.
2332A), or A8R4 for SN prefixed 1707A (located on A8 board) to set bandwidth of 5
divisions wide at 5th graticule line above graticule baseline (R).
NOTE
Perform (5) through (21) below for SN prefixed 1707A only.
Perform (22) through (44) below for SN prefixed 2332A, 2215A,
and below.
(5) Set RESOLUTION BW switch to 100 kHz and FREQ SPAN/DIV switch to
20 kHz.
(6) Adjust signal level to 7.1 divisions with REF LEVEL FINE control.
(7) Adjust A8R3 (located on A8 board) for a 5-division wide signal at the 5th
graticule line above graticule baseline (R).
(8) Set RESOLUTION BW switch to 30 kHz and FREQ SPAN/DIV switch to 5
kHz, and repeat (6) above.
(9) Adjust A8R2 (located on A8 board) for a 6 division wide signal at 5th graticule
line above graticule baseline (R).
(10) Disconnect CAL OUTPUT from INPUT 50Ω.
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