Kramer 4 x 4 Seamless AV Matrix Switcher/Multi-Scaler - Manual (Page 115)

108 VSM-4x4A – VSM-4x4A RS-232/Ethernet Communication Protocol
# Resolution # Resolution
23 1280x720p25 (720p25) 55 1920x1080p29 (1080p29)
24 1280x720p29 (720p29) 56 1920x1080p30 (1080p30)
25 1280x720p30 (720p30) 57 1920x1080i50 (1080i50)
26 1280x720p50 (720p50) 58 1920x1080p50 (1080p50)
27 1280x720p59 (720p59) 59 1920x1080i59 (1080i59)
28 1280x720p60 (720p60) 60 1920x1080i60 (1080i60)
29 1280x720p60CVT 61 1920x1080p59 (1080p59)
30 1280x768p60RB 62 1920x1080p60 (1080p60)
31 1280x768p60 63 1920x1200p60RB
10.3.11 Error Codes
Error Description
0 No error
1 Protocol syntax error, 1st char isn ’t '#'
2 Command not available in command list
3 Parameter is out of range
4
5
6 Protocol busy, UART ring buffer is overflow
7
8
9 Command is not available in current status