Specifications

SDM-650B Satellite Modem Configuration
Rev. 5 3–43
Figure 3-14. AS/3812 Doppler Buffer Daughter Card
Pinouts on the 34-pin V.35 are:
• “c” for MC-A
• “d” for MC-B
The pinouts on the 37-pin connector are:
• Pin 16 for MC-A
• Pin 34 for MC-B
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.