• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
Equipment Setup
Table 3D. Receiver Level and Frequency

Calibration Procedure For Transmission Impairment Measuring Set Model 4945A Page Navigation
  1    2    3  4  5    6    7    8    9  
img
. . . . . .
TB 9-6625-2221-24
NOTE
TRMT/RCV and RCV/TRMT - the LED illuminated determines
which terminals are connected to the transmitter and which
are connected to the receiver. To reverse the connections, press
the alternate hardkey.
(2) Connect calibrator output to TI RCVR terminals.
(3) Press hardkey TEST SELECT.
(4) Press softkey LEVEL FREQUENCY.
(5) Set calibrator for 3.46 V and frequency to 20.0 Hz. TI will indicate within limits
specified for +13 dB level in table 3A.
(6) Repeat technique of (5) above for levels indicated in table 3A. TI will indicate
within limits specified for each level.
(7) Repeat technique of (5) and (6) above for remaining frequencies listed in table 3B
through table 3E.
Table 3A. Receiver Level and Frequency
Test instrument indications
Calibrator
level (dB)
frequency
Frequency
+13
(Hz)
(Hz)
(3.46 V)
Min
Max
20.0
+12.5
+13.5
r1
200.0
+12.8
+13.2
r1
1004.0
+12.8
+13.2
r1
9990.0
+12.8
+13.2
r1
14,000
+12.8
+13.2
r10
110,000
+12.5
+13.5
r10
Table 3B. Receiver Level and Frequency
Test instrument indications
Ac
level (dB)
Frequency
Calibrator frequency
(Hz)
0
(Hz)
(0.775 V)
Min
Max
20.0
-0.5
+0.5
r1
200.0
-0.2
+0.2
r1
1004.0
-0.1
+0.1
r1
9990.0
-0.2
+0.2
r1
14,000
-0.2
+0.2
r10
110,000
-0.5
+0.5
r10
5


Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved.