Manual
Distribution Amplifier (DA)—User Manual 
61 
D-2.3 ACK Type C 
ACK Byte + LB + Data 1 + Data 2 + CRC Byte (Total 5 Bytes) 
Name  Bit 7  Bit 6  Bit 5  Bit 4  Bit 3  Bit 2  Bit 1  Bit 0 
AB 
ACC  0  0  Device ID (0 – 31) 
LB 
Length for the total data bytes (This byte is always 2) 
DB 1 
Data 1 
DB 2 
Data 2 
CB 
CRC 
AB & CB: These are the same as the ACK Type A. 
LB: LB value is always 2 (Data 1 + Data 2). Not include the CRC byte. 
DB: Data Bytes as define below. 
Request  Description  Data 1  Data 2 
0x30  Request Protocol Version  VER1  VER2 
0x31  Request Firmware Version  VERA  VERB  VERC 
Version Type A: 
RS-232 Protocol Version contains the VER1 and VER2 (ex: VER1.VER2) 
VER1: Data 1, Bit 7 - Bit 0 (Range 0 - 99) 
VER2: Data 2, Bit 7 - Bit 0 (Range 0 - 99) 
If the Data 1 is 0x01 and Data 2 is 0x07; VER1 = 1 and VER2 = 7; RS-232 protocol 
version is v1.07 
If the Data 1 = 0x23 and Data 2 = 0x45; VER1 = 0x23 = 35 and VER2 = 0x45 = 69; 
RS-232 protocol version is v35.69 
Version Type B: 
Firmware Version contains the VERA, VERB and VERC (ex: VERA.VERB.VERC) 
VERA: Data 1, Bit 7 - Bit 4 (Range 0 - 9) 
VERB: Data 1, Bit 3 - Bit 0 (Range 0 - 9) 
VERC: Data 2, Bit 7 - Bit 0 (Range 0 - 99) 
If the Data 1 is 0x10 and Data 2 is 0x07; VERA = 1, VERB = 0 and VERC = 7; Firmware 
version is v1.0.07 
If the Data 1 = 0x23 and Data 2 = 0x45; VERA = 2, VERB = 3 and VERC = 69; Firmware 
version is v2.3.69 










