 |
|||
|
|
|||
| ||||||||||
|
|  MIL-T-48621A ( AR )
cali brated divider network (it e m 39, Table
DiCOnneCt
i.
111 ) from noise OUT p o r t and COnneCt frequency counter
its place.
t e m 37, Table III )
Set MODE switch to EXT TEST .
k.
Set OPEr/tEST switch to MTR OFF.
at counte r.
Adjust REF LEVEL for proper s Ignal 1
d
1.
oscillator
Read frequency. This is the referen
10 percent.
frequency for Band 3, which i S 1 MHz
Set OPER/TEST switch to +12VB
m.
q
for reference oscillator frequency for Band
n.
Read Counter
2 (4 3 KHZ +
O percent).
Set OPER/TEST Swi tch to +12VA.
0.
Read counterI for reference Osc illator frequency for Band
P"
O percent).
1 (2
37, Table 1X1 ) from
frequency
(i
DiSCOnnect
q"
Noise Out port.
.
RF tuninq controls
4.7.3.6
Refer to 4.7.3.3 for verification of tuneabi ilty over
a.
frequency range.
as shown in Figure 1.
b.
Ipment
Set microwave power source ( i t e m 18, Table XII ) channel
c.
selector to Channel 1.
Using Table V as a guide, adjus t the variabl e wav eguide
attenuator ( item 16, Table III) for +1 O DBM i n p u t Signal
using power meter ( Items
t 0 the noise tester RF
6 and 8, Table III) as
ator.
Set MODE switch to INTL TEST
e.
q
Set OPER/TEST switch to CAV TUNE positi
f.
q
Adjust FREQ TUNE to channel in use. Make final
adjustments (fine tuning) with the NOISE INDICATOR meter
as an indicator of the true peak. Adjust the RF LEVEL
control as necessary to keep indication on scale during
tuning. When final peak is attained, adjust for full
scale red Indication (not pinned). Lock the cavity
dial.
h.
/TEST switch to BAL position
Set
36
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals