Figure 3-14. As/3812 Doppler Buffer Daughter Card - Comtech EF Data SDM-650B Installation And Operation Manual

SDM-650B Satellite Modem
Pinouts on the 34-pin V.35 are:
•
•
The pinouts on the 37-pin connector are:
•
•
The electrical configuration of these lines is the RS-422.
The jumper selection must be set to external clock in order to use the external reference.
The asynchronous channel unit has a plesiochronous buffer and is selectable in 16-bit
increments, from 384 to 262144 bits.
Notes:
1. Maximum variations = peak-to-peak uplink plus downlink.
2. Maximum rate of variations = uplink plus downlink.
Rev. 5

Figure 3-14. AS/3812 Doppler Buffer Daughter Card

"c" for MC-A
"d" for MC-B
Pin 16 for MC-A
Pin 34 for MC-B
Configuration
3–43