OPTIONS 4001,4002,4003,4004,4005,4006,RM
4001 SECOND INTERFACE SLOT
4002 IEE-488 REMOTE CONTROL / PRINTER INTERFACE
4003 PRECISION TIME BASE (+/- 1ppm)
4004 G.821 PREFORMANCE ANALYSIS
4005 FREQUENCY SYNTHESIZER
4006 SYNCHRONOUS LONG USER PATTERN
WITH RACK MOUNT