Spacelabs Healthcare Ultraview 90341, Service Manual

Page: 168 / 212

www.spacelabshealthcare.com 4 - 3 6
U
L T R A V I E W
D
I G I T A L
T
E L E M E T R Y
-
S
E R V I C E
M
A N U A L
M
A I N T E N A N C E
Verify Center Frequency, Model 91341-09
To verify transmitter center frequency
1 Set up the spectrum analyzer as follows:
2 Verify that the two sideband peaks are symmetrical on either
side of the center frequency (refer to
Figure 4-18 on page 4-
37).
3 Verify the sideband peaks are approximately ±3 KHz from the
center frequency.
Verify Center Frequency, Models 91343-09 and 91347-09
To verify transmitter center frequency
1 Set up the spectrum analyzer as follows:
2 Verify that the two sideband peaks are symmetrical on either
side of the center frequency (refer to
Figure 4-18 on page 4-
37).
3 Verify the sideband peaks are approximately ±6 KHz from the
center frequency.
Span 1 MHz/div
Ref Level 10 dBm
RBW 1 kHz
RF Attn Auto
Span/Div 2 MHz/div
Ref Level 10 dBm
RBW 1 kHz
RF Attn Auto