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LF Multiplier
5.50
Equipment required:
Item
Signa [ Generator
T piece
Terminating pad
Coaxial leads
Table 3 Item No.
4
6
7
8
5.51
Connect the T piece to the 'B' Channel input of the UUT. Connect the signal
generator and the terminating pad to the T piece.
5.52
Set the controls of the UUT as for lows:
(1)
N ORIVA L/BURST/CHECK switch to NOR!vV\ L
(2)
OPERA TE/STANDBY switch to OPERATE
(3)
LFselected
(4)
RESOLUTION switch to 1 Hz
5.53
Apply the frequencies shown in Table 11 at a level of 8 mV r.m.s. (-29 dBm).
Verify that a stable and accurate display is obtained at this level.
Increase
input to 50 k Hz and reduce again to 25 k Hz. Observe mul tipl ier does not
lock to intermed iate frequency.
TABLE 11
Frequency
Display
10 Hz
000010.00 Hz
25 kHz
025000.00 Hz
~
5.54
Remove the input connection to the UUT and check that the display does not
exceed 5 counts.
5-13
9916
Vol.2
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