Rf Cable Ordering Information - Agilent Technologies 85301B Configuration Manual

RF cable ordering information

Cable length
Determine the type and length (in meters) of cable
required. Order the cable by type (85381A, C, D or
85382A) and length option Cxx, where 'xx' speci-
fies the length of the cable in meters. To order a
one-half meter cable, specify Option C00. To con-
vert feet to meters, multiply the number of feet by
0.3048.
Ordering example: To order a 23-foot cable for use
up to 26.5 GHz, order 85381C Option C07 (23 feet
x 0.305 = 7 meters).
Cable connectors
A variety of connector types are available for the
85381A/C/D and 85382A RF cables, as shown in
Table 12. Two connector options must be ordered
for each cable.
Table 12. RF cable connector options
Cable Type
Connector 85381A 85381C
1
Type DC to 18 GHz DC to 26.5 GHz DC to 50 GHz DC to 100 MHz
Type-N male CNM CNM
Type-N female CNF
3.5 mm male C3M
3.5 mm female C3F
SMA male CSM CSM
SMA female CSF
BNC male
BNC female
2.4 mm male
2.4 mm female
1. Minimum bend radii for cables are as follows: 85381A/C/D, 5 cm (2 inches);
85382A, 6 cm (2.5 inches).
2. Maximum frequency is 18 GHz.
85381D 85382A
1 1
CNM
2
2
2
2
CBM
CBF
C2M
C2F
Cable ordering example:
To obtain a 23-foot cable for use up to 18 GHz with
a Type-N male connector on one end and an SMA
male connector on the other end, order an 85381A
Option C07, CNM, CSM. To get a 9-meter cable for
use up to 26.5 GHz with 3.5-mm male connectors
on each end, order an 85381C Option C09, C3M,
C3M.
Reference and test LO cables
The same LO cable type and length is required for
both the reference and test mixer modules. This is
to ensure that the insertion losses through the ref-
erence and test mixer module LO paths are the
same. Using the same LO cable type also optimizes
cable phase tracking versus temperature and,
therefore, system phase measurement, stability,
and accuracy.
Remote LO source
If the maximum cable distance between the LO
source and the 85309A LO/IF unit is insufficient, a
synthesized LO source may be remoted with the
1
85309A using 37204A GPIB extenders. Remote dis-
tances of up to 25 meters cause no degradation in
system sensitivity; beyond 25 meters, the system
sensitivity degrades by 0.1 dB per meter. System
sensitivity degradation is due to IF cable loss in
the 20 MHz IF cables connecting the 85309A to the
8530A.
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