Section 5: Options and Accessories
8197 Instruction Manual
Page 5-5
5.2.1.4
Model 8140MT MultiTap
The Spectracom Model 8140MT MultiTap is a programmable frequency
divider/buffer. Three outputs can be configured to the same frequency or set
independently. When used as part of your Spectracom Distribution System it
decreases the cost per output and allows future modifications as requirements
change.
Frequency Outputs
: Three square wave outputs per MultiTap. 1.5V p-p into 50
ohms. Once a group is chosen, any divisor in a group may be individually
selected.
Table of output divisors:
Group A
B
C
D
1
1 5 5
2 2 10 10
10 20 50 100
50
100 250 500
250 500 1250 2500
For a 10-MHz input, the available outputs in MHz are:
Group A
B
C
D
10.0 10.0 2.0 2.0
5.0 5.0 1.0 1.0
1.0 0.5 0.2 0.1
0.2 0.1 0.04 0.02
0.04 0.02 0.008 0.004
Power Requirements:
When driven by a Distribution Amplifier, the DC load
equals three Line Taps. Option 40, which is required for stand-alone operation,
reduces the distribution load to one Line Tap equivalent, and is required
whenever output frequencies are below 100 kHz. Maximum current is less than
150 mA.
MultiTap size
:
5.25L x 2.63W x 1.71H inches.
(133L x 67W x 43H mm)
Mounting hole
:
4.75 x 1.75 inches. (121 x 44 mm)
