Hewlett Packard 11835A Data Buffer
From Agilent Technologies website:
The Agilent 11835A Data Buffer is a configurable data output device. Its primary function is to buffer data from a computer and output the data as a serial stream. It can output the serial data at rates from dc to 4 MHz with a user-supplied clock. Optionally, an internal reference board will provide the bit clock used in the GSM system (Option 001) or the bit and symbol clock used in the North American and Japanese digital cellular systems (Option 002).
- Configurable data output device
- Serial data output rates from dc to 4 MHz
- Optional bit and symbol clock for NADC and PDC systems